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MULTIPLICATION – STAGE 1 Solve problems including doubling Counting – Children should be able to count on in 1’s, 2’s, 5’s and 10’s. They should be familiar with rhymes, songs and stories – for example 'One Two buckle my shoe' and 'The animals went in 2 by 2' Count repeated groups of the same size by counting on and back in 1s, 2s, 5s and 10s Lit t le Red Riding Hood had 5 st rawbe rrie s in he r b ask e t , how many would she have in 2 b ask e t s? Mr T ick le t ick le s 3 pe ople e ach d ay, how many will he t ick le in 2/ 3/ 5 days? Begin to use vocabulary associated with multiplication Record using marks which they can interpret and explain Can you make a Lego tower of 10 bricks? How many bricks will you use if you make 3/6/10 towers? Can you give each of your toys 2 cakes for their picnic, how many cakes are there altogether? Counting how many hands or feet are in a group of children. Counting the legs or spots on a group of mini beasts Pair socks and count in twos. Children will be encouraged to use real life examples of doubling eg: counting butterfly spots on wings etc. Double, twice, multiply, lots of, count on, repeated addition, pattern, twos, fives, tens, hundred square, MULTIPLICATION – STAGE 2 Solve practical problems that involve combining groups of 2, 5 or 10. These will include using measures, objects and quantities. Counting – Children should be able to count on from zero in ones, twos, fives or tens and recognise odd and even numbers 2’s – 2,4,6,8,10 5’s – 5,10,15,20,25,30,etc… 10’s – 10,20,30,40, etc… Children should recognise and use the patterns of last digits, e.g. 0 and 5 when counting in fives. Double numbers and quantities to 20 and recall doubles of numbers up to 10. How many toes altogether on four feet? Use coins to count in 1s, 2s, 5s and 10s. Children could listen as they dropped into tin and count in 2s, 5s or 10s to total What is double 12? Children can use practical resources to solve initially but will then be expected to know their doubling facts. Double, twice, multiply, lots of, count on, repeated addition, pattern, twos, fives, tens, hundred square, lots of, groups of, X, times, multiply, multiplied by, once, twice, three times… ten times… times as (big, long, wide… and so on), odd, even, pattern, MULTIPLICATION – STAGE 3 Represent repeated addition and arrays as multiplication; use practical and informal written methods and related vocabulary to support multiplication. Counting – Children should be able to count in 2s, 3s, 5s and 10s (linking also to counting in 5s to telling the time to 5 minutes) Known Facts – Children should know multiplication facts for 2, 5 and 10 times tables. Children should link the 10 times tables to place value. Children solve multiplication problems using the following strategies: 1. Counting aloud - Using fingers to keep track Use symbols x and = to record and interpret number sentences. 2. Repeated addition Understand that 4X 5 = can be read as 4 groups of 5 or 5+5+5+5 = multiplication can be done in any order. 3. Known Facts – Know multiplication facts for 2, 5 and 10 times tables. Solve a number sentence with a missing number Recognise and use the inverse (opposite) relationship between x and ÷ Solve problems in a variety of problems including using £ OR p 4. Drawing pictures 5. Drawing arrays 4 groups of 5 or 5 groups of 4 Solving Problems Children should be able to use the strategies above to solve: § Word problems eg: Timmy had four packs of sweets. Each pack has five sweets in. How many sweets does Timmy have altogether? Sally, Tommy and Tina each have £5. How much do they have in total? § Missing number problems Eg: __ x 5 = 15 Double, twice, multiply, lots of, count on, repeated addition, pattern, twos, fives, tens, hundred square, lots of, groups of, X, times, multiply, multiplied by, once, twice, three times… ten times… times as (big, long, wide… and so on), odd, even, pattern, array, row, column, inverse, multiples MULTIPLICATION – STAGE 4 Use known tables and practical and informal written methods to multiply 2-digit numbers Use known multiplication facts to derive other facts Understand that division is the inverse of multiplication and vice versa; use this to derive and record related multiplication number sentences. Counting – Children will be expected to count in 2s, 3s, 5s and 10s (linking to counting in 5s to telling the time to 5 minutes) 50s and 100s Known Facts Children should recall and use x facts for the 2, 3, 4, 5, 8, 10 times table Drawing 3 x 13 3 lots of 13 Use knowledge of doubling to connect 2, 4 and 8 tables Partitioning (As a written method or mentally) Consolidating understanding of the above methods will then lead to the grid method. x 4 Use multiplication knowledge to solve problems Arrays 3 x 14 10 40 3 12 40 +12 52 Solving Problems Children should be able to use the strategies above to solve: § Word problems eg: Star stickers come in packs of 12, how many stickers are in 4 packs? § Missing number problems Eg: 8 x __ = 32 Double, twice, multiply, lots of, repeated addition, X, times, multiply, multiplied by, groups of, multiplication, product, once, twice, three times… ten times… odd, even, pattern, array, row, column, times as (big, long, wide… and so on), MULTIPLICATION – STAGE 5 Multiply numbers to 1000 by 10 and then 100 (whole number answers) understanding the effect; relate this to scaling up or down. Understand the impact of multiplying by 0 and 1. Multiply 3 1 digit numbers and understand this can be done in any order Multiply TU by TU and TU by HTU using a formal written layout Recognise and use factor pairs (in relationship to multiplying by multiples of 10) and commutativity in mental calculations Counting – Children will be expected to count in 2s, 3s, 5s, 10s (linking to counting in 5s to telling the time to 5 minutes) 25s, 50s and 100s Known Facts Children should know and use multiplication facts from 0x0 to 10 x 10 and derive 11 and 12 times tables from this. They should know the impact of multiplying by 0 and 1. Solve 2 x 5 x 4 = Children to understand that this can be solved in any order. Grid method (linking with a Grid method for TU x TU Grid method for TU x HTU clear visual image): 18x 47 234 x 42 400 8000 13 x 6 = + + 1200 x 10 8 320 x 200 30 4 160 70 40 400 320 400 40 8000 1200 160 56 7 70 60 846 2 400 60 8 8 56 9828 1 Use factor pairs to solve 50 x 8 = (5 x 10 x 8) Solving Problems Solve 2 step problems Children should be able to use the strategies above to solve: including using the distributing § Word problems eg: Materials is sold in 100cm pieces. I need 50cm of material to make a curtain. I law to multiply TU by U need to make 4 curtains. How many pieces of material do I need to buy? § Missing number problems Eg: 8 x__ = 560 OR ___ x ___ = 24 What could the missing numbers be? Double, twice, multiply, lots of, repeated addition, X, times, multiply, multiplied by, groups of, multiplication, product, once, twice, three times… ten times… odd, even, pattern, array, row, column, times as (big, long, wide… and so on), MULTIPLICATION – STAGE 6 Refine and use efficient formal written methods to multiply numbers up to 4 digits by a 1 or 2 digit number Use understanding of place value to multiply whole numbers and decimals by 10, 100 and 1000 Multiply and divide numbers mentally drawing on known facts Multiply proper fractions and mixed numbers by whole numbers Counting Children will be expected to count on from any number to 1 million in Ts, Hs, Ths, TThs, HThs Known Facts – Children should know and use multiplication facts from 0x0 to 10 x 10 and derive 11 and 12 times tables from this. Grid Method for ThHTU by U 1869 X 6 = X 1000 800 60 6 6000 4800 360 54 Grid Method for ThHTU by TU 2718 x 47 9 X 2000 700 10 8 40 80000 28000 400 320 7 14000 4900 70 56 6000 4800 360 54 11214 Mental Methods 7.7 x 100 = Mental 80000 strategy to be used 28000 drawing on known facts and 400 place value. 320 14000 4900 70 56 127746 Understand notation of square and cube numbers 5³ Solve as 5x5x 5 Understand that Multiply proper fractions and mixed numbers by whole numbers multiplication can be done 2x4=8 in any order 2 x 1/3 = 2/3 Recognise and understand the notation of square and cube numbers Apply knowledge to multi-step problems in a variety of contexts 8 + 2/3 = 8 2/3 Solving Problems Children should be able to use the strategies above to solve: § Word problems eg A pack of plums costs 68p. Mark bought thirteen packs of plums. How much change did he get from a £10 note? Each panda in the zoo needs 3/5 of a bamboo plant every day. If there are 14 pandas in the zoo altogether how many bamboo plants does the zoo need every day? How many would they need for a week? § Missing number problems Eg: 90 x __ = 27000 Double, twice, multiply, lots of, repeated addition, X, times, multiply, multiplied by, groups of, multiplication, product, once, twice, three times… ten times… odd, even, pattern, array, row, column, times as (big, long, wide… and so on), MULTIPLICATION – STAGE 7 Multiply multi digit numbers (up to 4 digits) by a 2 digit number using a formal written method Use efficient written methods to multiply integers and decimals by a one-digit (and then two digit) integer. Counting Children will be expected to count on from any number to 1 million in Ts, Hs, Ths, TThs, HThs Known Facts – Children should know and use multiplication facts from 0x0 to 10 x 10 and derive 11 and 12 times tables from this. Grid Method 2718 x 47 X 40 7 2000 700 10 80000 14000 28000 4900 400 70 Multiply 1 digit numbers with 2dp with whole numbers Relate fractions to multiplication Multiply simple pairs of proper fractions and give answer in the simplest form 8 320 56 80000 28000 400 320 14000 4900 70 56 127746 Long multiplication 54 32 8 (2 x 4) 100 (2 x 50) 120 (30 x 4) 1500 (30 x 50) 1728 Leading to short multiplication 54 x 32 108 1620 1728 Relate fractions to multiplication e.g. 6 x ½ = ½ of 6 = 6 ÷ 2 Multiplying fractions Multiply decimals eg:4.9 x 32 using an appropriate method. Multiply the numerators and then multiply the denominators. Solving Problems Children should be able to use the strategies above to solve: § Word Problems Eg: A box contains 36 tins of sweetcorn. Each tin weighs 475 grams. What is the total weight of the tins in the box? Missing number problems Eg: __ x 8 = 4.8 Double, twice, multiply, lots of, repeated addition, X, times, multiply, multiplied by, groups of, multiplication, product, once, twice, three times… ten times… odd, even, pattern, array, row, column, times as (big, long, wide… and so on),