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Miss Bβs Maths DIRT Bank Created by teachers for teachers, to help improve the work life balance and also the consistent quality of feedback our students receive. This aims to be a continuously evolving document. Please contribute to the DIRT Bank simply emailing you DIRT question(s) youβve created and your name/twitter handle to [email protected] and I will update weekly. www.missbsresources.com Template www.missbsresources.com Contents Number Topic Contributor Twitter Handle Multiplying 3 digit by 1 digit (grid) Danielle Bartram @Missbsresources Multiplying 3 digit by 1 digit (Long) Danielle Bartram @Missbsresources Multiplying 3 digit by 2 digit (grid) Danielle Bartram @Missbsresources Multiplying 3 digit by 2 digit (Long) Danielle Bartram @Missbsresources Multiplying by scalars of 10 Danielle Bartram @Missbsresources Multiplying decimals Danielle Bartram @Missbsresources Dividing decimals Danielle Bartram @Missbsresources Functional division 1 Danielle Bartram @Missbsresources Functional division 2 Danielle Bartram @Missbsresources Addition and subtraction 1 Danielle Bartram @Missbsresources Addition and subtraction 2 Danielle Bartram @Missbsresources Directed numbers four rules Danielle Bartram @Missbsresources Functional Temperature 1 Danielle Bartram @Missbsresources Functional Temperature 2 Danielle Bartram @Missbsresources Ordering Decimals Danielle Bartram @Missbsresources Rounding nearest 10 Danielle Bartram @Missbsresources Significant Figures Danielle Bartram @Missbsresources Rounding using a calculator 1 Danielle Bartram @Missbsresources Rounding using a calculator 2 Danielle Bartram @Missbsresources Laws of Indices Danielle Bartram @Missbsresources Inequality Notation 1 Danielle Bartram @Missbsresources Inequality Notation 2 Danielle Bartram @Missbsresources Solving Inequalities Danielle Bartram @Missbsresources Bounds nearest unit Danielle Bartram @Missbsresources Bounds nearest (1dp) Danielle Bartram @Missbsresources Bounds nearest (1dp) Danielle Bartram @Missbsresources Bounds Area Danielle Bartram @Missbsresources www.missbsresources.com Contents Geometry Topic Contributor Twitter Handle Area and Perimeter (ππ2 ππππ) Danielle Bartram @Missbsresources Area and Perimeter half squares (ππ2 ππππ) Danielle Bartram @Missbsresources Area of a Triangle Danielle Bartram @Missbsresources Area of a Parallelogram Danielle Bartram @Missbsresources Area of a Trapezium Danielle Bartram @Missbsresources Parts of a Circle Danielle Bartram @Missbsresources Circumference of a Circle Danielle Bartram @Missbsresources Area of a Circle Danielle Bartram @Missbsresources Arc Length Danielle Bartram @Missbsresources Area of a Sector 1 Danielle Bartram @Missbsresources Area of a Sector 2 Danielle Bartram @Missbsresources Perimeter of Rectilinear Shapes Danielle Bartram @Missbsresources Area of Rectilinear Shapes Danielle Bartram @Missbsresources Area of Compound Shapes Danielle Bartram @Missbsresources Volume β Counting Cubes Danielle Bartram @Missbsresources Volume β Cuboid Danielle Bartram @Missbsresources Volume β Triangular Prism Danielle Bartram @Missbsresources Volume β Cylinder Danielle Bartram @Missbsresources Volume β Hemisphere Danielle Bartram @Missbsresources Volume β Sphere/Cone (Ice Cream) Danielle Bartram @Missbsresources Dimensions Danielle Bartram @Missbsresources Surface Area β Cuboid Danielle Bartram @Missbsresources Surface Area β Cylinder Danielle Bartram @Missbsresources Pythagoras β Identify Hypotenuse Danielle Bartram @Missbsresources Pythagoras β Missing Hypotenuse 1 Danielle Bartram @Missbsresources Pythagoras β Missing Hypotenuse 2 Danielle Bartram @Missbsresources Pythagoras β Missing Short Side Danielle Bartram @Missbsresources Pythagoras β 3D Cuboid Danielle Bartram @Missbsresources Pythagoras β Isosceles Triangle Danielle Bartram @Missbsresources Danielle Bartram @Missbsresources Trigonometry β 3D Square-based pyramid www.missbsresources.com Contents Algebra Topic Contributor www.missbsresources.com Twitter Handle Contents Data Handling Topic Contributor www.missbsresources.com Twitter Handle Contents Problem Solving and Functional Topic Contributor www.missbsresources.com Twitter Handle Number Multiplication Calculate 273 x 4 Calculate 247 x 3 × 4 800 70 3 Calculate 247 × 3 Calculate 273 × 4 2 7 3 1 4 × 2 Complete the multiplication and add the exchanged (carried) numbers. Calculate 354 × 27 × Calculate 634 × 52 20 300 2100 1000 4 Calculate 354 × 27 3 5 4 2 7 2 4 7 8 0 × + Calculate 634 × 52 Complete the multiplication and add the exchanged (carried) numbers. www.missbsresources.com Number Multiplication Calculate 3.9 × 100 Th Calculate 2.7 × 1000 H T U . 1 10 3 3 . 9 Calculate 0.97 × 100 . Fill in the gaps. Calculate 15 × 0.6 9 x 0.3 Show all working out. 9 x 3 = 27 1dp in the question, so 1dp in the answer Calculate 0.15 × 0.6 9 x 0.3 = 2.7 Show all working out. www.missbsresources.com Number Division The school minibus seats 14 children. 60 children need to go to the cricket tournament. How many times must the bus make the trip. 60 ÷ 14 = 14 14 14 14 ? The school minibus seats 14 children. 365 children need to go to the cricket tournament. How many times must the bus make the trip. 365 ÷ 14 = 50 people are going to a meeting in the school hall. We need chocolate brownies for everyone but they come in packs of 6. How many packs do we need to buy? 359 people are going to a meeting in the school hall. We need chocolate brownies for everyone but they come in packs of 6. How many packs do we need to buy? 14 Answer: Calculate 518 ÷ 0.7 Calculate 245 ÷ 0.4 Show all working out. Show all working out. 0.7 518 7 5180 www.missbsresources.com Number Addition and Subtraction Addition Subtraction Work out the following. 4 +3 Addition + 3 1 6 8 Subtraction 7 5 β 5 3 8 2 4 7 2 6 5 6 8 5 7 2 4 7 Work out the following. 4 +3 1 www.missbsresources.com 2 6 4 7 5 5 7 2 4 7 Number Directed Numbers How much Factor 1 is this? + + + - 2 1 0 Factor 2 + + -- -- -- + + -- Product Overnight, the temperature dropped from 2 ºC to -4 ºC. By how many degrees did the temperature fall? -1 -2 +4 β +3 = +4 β β3 = +4 + β3 = β 4 β +3 = β 4 β β3 = β 4 + β3 = +5 × +3 = β5 × +3 = β5 × β3 = +6 ÷ β2 = β6 ÷ β2 = One day the level of the water in a river was 8cm above its average level. One week later it was 6cm below its average level. How far did the water level drop in the week? -3 -4 1 0 -1 -2 -3 -4 -5 The table shows the temperatures in four cities. Calculate the difference between he highest and lowest temperature. Highest: London 0π πΆ Lowest: π Moscow β9 πΆ Difference: Paris 6π πΆ Berlin At 7am, Joe recorded the temperature in his garden as being β4°C. He went back outside at 1pm and found that the temperature had increased by 12°C. What was the temperature at 1pm? β3π πΆ www.missbsresources.com Number Place Value Place the decimals in ascending order. Units . 1 10 1 100 1 1000 0 . 4 5 0 . 0 0 4 0 . 4 0 5 0 . 5 Place the decimals in ascending order. 0.602, 0.26, 6.02, 0.026, 0.06, 0.6 www.missbsresources.com Number Rounding 73 70 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80. 76 80 1) Round 148 miles to the nearest hundred miles. 2) To the nearest 10p how much is in Sianβs purse? 76 goes up to 80, because 76 is closer to ____ than to _____. 3.9 + 4.1 7 1.14285714 Round to 2 significant figures. Calculate 11.7β3.1 9.6β2.4 Write down the full calculator display. Round to 3 significant figures. Place holder 9.83β1.622 Calculate 23.8β4.47×5.12 Calculate Work out the numerator: 8.95+ 7,84 2.03×1.49 Write down the full calculator display. Work out the denominator: Write down the full calculator display. Round the following numbers to 3 significant figures. Third 1) significant figure Place holder 2) 35260 2.347 Correct to 3 significant figures. Round the following numbers to 3 significant figures. 1) 2) 3) 4) 3568 42062 0.024537 0.0034078 www.missbsresources.com Number Indices Fill in the missing gaps. 34 × 37 = 3 29 ÷ 25 = 2 2β1 1 = 2 =3 58 × 56 = _________ =2 79 × 7β3 = _________ 412 ÷ 43 = _________ 6β1 = _________ www.missbsresources.com Number Inequalities Match the inequality notation with the correct definition. < Less than or equal to β₯ β€ Greater than Greater than or equal to > Less than Match the inequality notation with the correct definition. β₯ Greater than < Less than or equal to β€ Less than > Greater than or equal to Find the maximum and minimum values for π₯ when 15 < 5π₯ < 20. What is the largest and smallest value π₯ can be? Minimum Maximum a) β5 < π₯ β€ 2 b)β3 β€ π₯ β€ 0 c) β9 < π₯ < β1 What is the largest and smallest value π₯ can be? Minimum Maximum a) β4 < π₯ β€ 3 b)β5 β€ π₯ < 0 c) β8 < π₯ < β1 Find the maximum and minimum values for π₯ when 20 < 4π₯ < 56. 15 < 5π₯ < 20 3< π₯ <4 Minimum: _______ Minimum: _______ Maximum: _______ Maximum: _______ www.missbsresources.com Number Bounds Lower Bound 21.5m Upper Bound 22.5m Amjadβs height is given as 162cm, correct to the nearest cm. Between which limits does Amjadβs height lie? A fence is m long to the nearest metre. Lower Bound £1.55 Upper Bound £1.65 A box is 8.5cm wide measured to the nearest tenth of a cm. What are the upper and lower bounds? A Krispy Crème doughnut costs £ to the nearest 10p. Lower Bound £1.45 Upper Bound £1.55 A box is 10.6cm wide measured to the nearest tenth of a cm. What are the upper and lower bounds? A Krispy Crème doughnut costs £ to the nearest 10p. A rectangle has a length of 20cm and height of 30cm to the nearest 10cm. What is the maximum and minimum area of the rectangle? Minimum Length Width Area The dimensions of a piece of carpet are given as 127cm x 68cm. Both lengths are correct to the nearest cm. Between what limits does the area of the carpet lie? Maximum 25cm 25cm 875ππ2 www.missbsresources.com Geometry Area and Perimeter Complete the sentences Area is the _____ of a shape. Find the area and perimeter of the shaded shape. Perimeter is the ________ of a shape. Complete the sentences Count the _________ to find the area. Find the area and perimeter of this shape. Count the _________ to find the perimeter. www.missbsresources.com Geometry Area and Perimeter Calculate the area of the triangle. Calculate the area of the triangle. 8 ππ 6 ππ π Area=______ππ 11 ππ 1 2 Area = × πππ π × βπππβπ‘ 5 ππ Area=__________ Calculate the area of the parallelogram. 8 ππ A right angled triangle is translated to the position shown to make a rectangles. The formula for the area of a parallelogram is the _________ as a rectangle. Half the _____ of the parallel sides. ________ the distance between them. That is how you calculate, area of a ___________. 11ππ Calculate the area of the trapezium. 6 ππ 5 ππ 10 ππ www.missbsresources.com Geometry Circles Match the key terms to the diagrams. Complete the sentences The radius is _______ the diameter. Diameter Circumference The diameter is _______ the radius. Radius Calculate the circumference of the circle. Calculate the circumference of the circle 10 ππ Radius= Diameter= 12 ππ Circumference= ππ Circumference= π × diameter Circumference=______πm Circumference=______ Calculate the area of the circle. Calculate the area of the circle. Radius= 3ππ Diameter= 4 ππ Area = ππ 2 Area = π × πππππ’π × πππππ’π Area = π × 3 × Area =______πππ Area =______ www.missbsresources.com Geometry Circles The formula for circumference in terms of radius is 2ππ Calculate the arc lengths. A The expression for arc length is B Calculate the arc length AB. 360 × 2 × π × 10 The formula for the area of a circle is Calculate the area of the sectors. A The formula for the area of a sector is B Calculate the area of the sector. 360 × π × 10 2 The formula for the area of a circle is A The formula for the area of a sector is B Calculate the area of the sector. × π × 10 2 www.missbsresources.com Geometry Area and Perimeter Find the perimeter of the shape. Not to scale. b Not to scale. Length a = 15 -6 =____ Length b = 11 =____ Perimeter=_____cm Perimeter=______ 12 ππ 11 ππ 5 ππ Find the area of the shape. 14 ππ 15 ππ Not to scale. 6 ππ 6 ππ b Area a = 5 × =____ Area b = 6 × 11 =____ Find the area of the shape. 7 ππ Not to scale. a 6 ππ 6 ππ 15 ππ a Find the perimeter of the shape. 7 ππ 14 ππ 5 ππ Area=____πππ 11 ππ 12 ππ Calculate the total area. Calculate the total area. The formula for area of a circle is_______ Area A = ___ x ___ =______ππ2 B 20 cm 5 cm A π_____2 Diagram not drawn accurately. 10 cm ππ 2 Area B = = =_____ππ2 2 2 Total area= Area A + Area B = _____+______ =________ππ2 10 cm Diagram not drawn accurately. www.missbsresources.com Area=______ Geometry Volume Find the volume of the solid prism. Here is a solid prism made from centimetre cubes. Volume:_____πππ Find the volume of the solid prism. Calculate the volume of the cuboid. Calculate the volume of the cuboid. 4 ππ 4 ππ Volume = length × width × height 3ππ 7ππ Volume=______πππ Volume=______ CSA is an abbreviation for cross sectional ________. Calculate the volume of the cylinder. 5 cm CSA = 4 ×____ 2 4 cm 4 cm 6 cm 5 cm Volume = CSA x 5 cm Volume = ____ x 10 = _____ππ3 Find the volume of the cylinder. 4cm 10cm www.missbsresources.com Geometry Volume Calculate the surface area of the sphere. 2 SA=4ππ Calculate the surface area of the sphere hemisphere with a radius of 8cm. 8cm 10cm Calculate the volume of this strawberry ice cream and cone. Clearly show all working out. The formula for the volume of a sphere is The formula for the volume of a cone is Area is measured in units _______, because it has ____ dimensions. a, b and c are representations of lengths. Which expressions represent volume? π2 π Volume is measured in units _______, because it has ____ dimensions. www.missbsresources.com π(π2 + π) 2πππ 4ππ3 Geometry Surface Area Surface area is the area of each face added together. Sketch a net of the prism before calculating the surface area to help you visualise the faces, Include Write the dimensions. A 3cm B C C 4cm A B A dimensions on the net. 3cm Calculate the surface area of the cuboid. 4cm Diagram not drawn accurately. C B What is the completed formula for the surface area of a cylinder? Find the surface area of the cylinder. ππ 2 β Circumference = π × ππππππ‘ππ 4cm ππ· × β 10cm ππ 2 www.missbsresources.com Geometry Pythagoras Accurately label the hypotenuse with a C on each of these triangles. Pythagorasβ theorem is + = The hypotenuse is the ___________ side. It is also the side opposite the ________ angle. Pythagorasβ theorem is + = π = 4 2 +3 Pythagorasβ theorem is + = π = 4 2 +3 Calculate the missing lengths. (Clearly show all working out) 2 12cm π 2 = 16 + 9 = π = 25 β¦ = To find the length of a shorter side in a right-angled triangle we rearrange Pythagorasβ theorem. π Pythagorasβ theorem is = π = π 2 2 β 2 β 2 Calculate the missing lengths of the shorter sides. (Clearly show all working out) π§ π 4.2 cm 2 π€ 9cm π2 = 9 π2 = π₯ 12 cm 2 + π₯ 6cm π2 = 9 π2 = 16 π€ 8cm π 2 = 16 + 9 = π = 25 β¦ = π2 = 16 7 cm 2 10 cm 2 Calculate the missing hypotenuse lengths. (Clearly show all working out) π¦ 12 cm www.missbsresources.com Geometry Pythagoras and Trigonometry Problems Pythagorasβ theorem is Second diagonal + Calculate the length of the line segment AF. = 2cm Remember to find a logical order to answering the question. 3cm 6cm First diagonal What is the formula for area of a triangle? Calculate the are of the triangle. 16 cm πππ π = π‘πππ = Calculate the angle between the length AE and the base ABCD in the pyramid pictured below, giving your answer to 1 decimal place. Opposite Remember πππ π πππ = βπ¦π π Adjacent www.missbsresources.com