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KENDRIYA VIDYALAYA SINGRAULI Holidays Homework
CLASS 6 [A+B]
EXERCISE 1.1
Q:1
1. Fill in the blanks:
(a) 1 lakh = _______ ten thousand.
(b) 1 million = _______ hundred thousand.
(c) 1 crore = _______ ten lakh.
(d) 1 crore = _______ million.
(e) 1 million = _______ lakh.
Q:2:-2. Place commas correctly and write the numerals:
(a) Seventy three lakh seventy five thousand three hundred seven.
(b) Nine crore five lakh forty one.
(c) Seven crore fifty two lakh twenty one thousand three hundred two.
(d) Fifty eight million four hundred twenty three thousand two hundred two.
(e) Twenty three lakh thirty thousand ten.
Q:3:-3. Insert commas suitably and write the names according to Indian System of
Numeration:
(a) 87595762 (b) 8546283 (c) 99900046 (d) 98432701
Q:4:-4. Insert commas suitably and write the names according to International System
of Numeration :
(a) 78921092 (b) 7452283 (c) 99985102 (d) 48049831
EXERCISE 1.2
Q:5- 2. Shekhar is a famous cricket player. He has so far scored 6980 runs in test
matches. He wishes to complete 10,000 runs. How many more runs does he need?
Q: 6 :7: A merchant had Rs 78,592 with her. She placed an order for purchasing 40 radio
sets at Rs 1200 each. How much money will remain with her after the purchase?
Q: 7:9. To stitch a shirt, 2 m 15 cm cloth is needed. Out of 40 m cloth, how many shirts
can be stitched and how much cloth will remain?
Q:8-10. Medicine is packed in boxes, each weighing 4 kg 500g. How many such boxes
can be loaded in a van which cannot carry beyond 800 kg?
EXERCISE 1.3
Q:-9 2. Give a rough estimate (by rounding off to nearest hundreds) and also a closer
estimate (by rounding off to nearest tens) :
(a) 439 + 334 + 4,317 (b) 1,08,734 – 47,599 (c) 8325 – 491
(d) 4,89,348 – 48,365
Q:-10 - write roman numerals for 1 to 100.
KENDRIYA VIDYALAYA SINGRAULI Holidays Homework
CLASS 7 [A]
Q:1:-Write definitions of Natural numbers, Whole Numbers, Integers.
Q:2:-Write closure ,associative ,commutative properties for Natural numbers ,Whole numbers
and Integers under addition ,subtraction and multiplication operation.
Q:3-In a quiz, positive marks are given for correct answers and negative marks are given
for incorrect answers. If Jack’s scores in five successive rounds were 25, – 5, – 10,
15 and 10, what was his total at the end?
Q:4-At Srinagar temperature was – 5°C on Monday and then it dropped
by 2°C on Tuesday. What was the temperature of Srinagar on Tuesday?
On Wednesday, it rose by 4°C. What was the temperature on this
day?
Q:6-Verify a – (– b) = a + b for the following values of a and b.
(i) a = 21, b = 18 (ii) a = 118, b = 125
(iii) a = 75, b = 84 (iv) a = 28, b = 11
Q:7-Use the sign of >, < or = in the box to make the statements true.
(a) (– 8) + (– 4) (–8) – (– 4)
(b) (– 3) + 7 – (19) 15 – 8 + (– 9)
(c) 23 – 41 + 11 23 – 41 – 11
(d) 39 + (– 24) – (15) 36 + (– 52) – (– 36)
(e) – 231 + 79 + 51 –399 + 159 + 81
8. A water tank has steps inside it. A monkey is sitting on the topmost step (i.e., the first
step). The water level is at the ninth step.
(i) He jumps 3 steps down and then jumps back 2 steps up.
In how many jumps will he reach the water level?
(ii) After drinking water, he wants to go back. For this, he
jumps 4 steps up and then jumps back 2 steps down
in every move. In how many jumps will he reach back
the top step?
(iii) If the number of steps moved down is represented by
negative integers and the number of steps moved up by
positive integers, represent his moves in part (i) and (ii)
by completing the following; (a) – 3 + 2 – ... = – 8
(b) 4 – 2 + ... = 8. In (a) the sum (– 8) represents going
down by eight steps. So, what will the sum 8 in (b) represent?
9:-(a) Write a pair of negative integers whose difference gives 8.
(b) Write a negative integer and a positive integer whose sum is –5.
(c) Write a negative integer and a positive integer whose difference is –3.
10: In a quiz, team A scored – 40, 10, 0 and team B scored 10, 0, – 40 in three
successive rounds. Which team scored more? Can we say that we can add
integers in any order?
Q:11 Find each of the following products:
(a) 3 × (–1) (b) (–1) × 225
(c) (–21) × (–30) (d) (–316) × (–1)
(e) (–15) × 0 × (–18) (f) (–12) × (–11) × (10)
(g) 9 × (–3) × (– 6) (h) (–18) × (–5) × (– 4)
(i) (–1) × (–2) × (–3) × 4 (j) (–3) × (–6) × (–2) × (–1)
KENDRIYA VIDYALAYA SINGRAULI
HOME WORK [Holidays]
CLASS 8 [A+B]
Q: 1:-Write definitions of Natural numbers, Whole Numbers, Integers and Rational numbers.
Q: 2:-Write closure, associative, commutative properties for Natural numbers, Whole numbers
and Integers under addition, subtraction, and multiplication and division operation.
Q:-3 write the additive inverse of each of the following.
22
−9





Q: 4-. Verify that – (– x) = x for.
−5
−9

−5
−9 

 
−9
8
1
Q: 5- Is the multiplicative inverse of −1 ? Why or why not?
8
9
22
Q: 6- Write.
(i) The rational number that does not have a reciprocal.
(ii) The rational numbers those are equal to their reciprocals.
(iii) The rational number that is equal to its negative
Q: 7-. Fill in the blanks.
(i) Zero has ________ reciprocal.
(ii) The numbers ________ and ________ are their own reciprocals
(iii) The reciprocal of – 5 is ________.
1
(iv) Reciprocal of where x 0 is ________.
𝑥
(v) The product of two rational numbers is always a _______.
(vi) The reciprocal of a positive rational number is ________.
Q: 8-. Write five rational numbers greater than –2.
Q: 9-Write five rational numbers which are smaller than 2.
−5
−10
−2
Q: 10-Represent these on the number line (i)
(ii)
(iii)
11
Q: 11-Find twenty rational numbers between
3
5
and
11
3
.
4
11