Class: 5th Maths chapter:1
Revision:
1. Write the numerals for each of the following:
(a) Seven crore ninety-two lakh eight thousand two hundred six.
Ans: 7,92,08,206
(b) Eighty crore sixty-seven lakh ninety-one thousand eight hundred twelve.
Ans: 80,67,91,812
(c) Six lakh seventy thousand one hundred five.
Ans: 6,70,105
(d) Two million five hundred seventy-one thousand three hundred ninety-two.
Ans: 2,571,392
(e) Eight million six thousand one hundred three.
Ans: 8,006,103
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2. Write number names of the following according to the given period space :
(a) 7,35,18,400
Ans: Seven Crore Thirty Five Lakh Eighteen Thousand Four Hundred
(b) 97,65.108
Ans: Ninty Seven Lakh Sixty Five Thousand One Hundred And Eight
(c) 7,703,419
Ans: Seven Million Seven Hundred Three Thousand Four Hundred Nineteen
(d) 81,214,635
Ans: Eighty One Million Two Hundred Fourteen Thousand Six Hundred Thirty Five
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3. Rewrite the following numerals in both the systems, in Indian place-value chart and in
International place value chart:
Ans: Indian and International
(a) Indian 7,18,209
International 718,209
(b) Indian 24,56,185
International 2,456,185
(c) Indian 9,34,81,118
International 93,481,118
(d) Indian 63,25,430
International 6,325,430
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4. Write the place-value of the underlined digits in each of the following numerals :
(a) 76,52,180
place-value of 8 ×10 = 80
(b) 9,25,093
place-value of 2.
2 ×10000 = 20,000
(c) 1,56,28,153
place-value of 2.
2 ×10000 = 20,000
(d) 9,32,19,425
place-value of 3.
3 ×1000000 = 30,00,000
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5. Making an Indian place-value chart, place the given numbers in the chart according to their periods and places :
(a) 3254695→ 32,54,695
(b) 632095→ 6,32,095
(c) 6766256→ 67,66,256
(d) 42956187→4,29,56,187
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6. Write the following mumerals in expanded form:
(a) 7,25,296
7,00,000+20,000+5,000+200+90+6
(b) 18,54,693
10,00,000+8,00,000+50,000
+4,000+600+90+3
(c) 7,07,17,277
7,00,00,000+7,00,000+10,000
+7,000+200+70+7
(d) 8,32,46,590
8,00,00,000+30,00,000+2,00,000
+40,000+6,000+500+90
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7. Write the following in short form:
(a) 8,00,000 + 10,000+ 4,000 + 700 + 90 + 1
Ans: 8,14,791
(b) 60,00,000 + 3,00,000 + 500 + 6
Ans: 63,00,506
(c) 8,00,00,000 + 50,00,000 + 6,00,000 + 20,000 + 8,000 + 800 + 60 + 7
Ans: 8,56,28,867
(d) 5,00,00,000 + 90,00,000 + 10,000 + 200 + 60 + 8
Ans: 5,90,10,268
(e) 2,00,00,000 + 50,00,000 + 60,000 + 2,000 + 400 +90 + 6
Ans: 2,50,62,496
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8. Find the sum :
(a) 2567893+1286509
= 38,54,402
(b) 57326410+28534759
= 8,58,61,169
(c) 83052689+10587394
= 9,36,40,083
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9.Find the difference:
(a) 9384026 -2659314
Ans: 67,24,712
(b) 1754608 - 895326
Ans: 8,59,282
(c) 42609300 -24596785
Ans: 1,80,12,512
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10. Find the product:
(a) 3,296 x 42
Ans: 1,38,432
(b) 17,503 x 26
Ans: 4,55,078
(c) 40,207 x 85
Ans: 34,17,595
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11. Divide:
(a) 12,386 ÷ 22
Ans: 563
(b) 99,997 ÷19
Ans: 5,263
(c) 1,74,386 ÷ 31
Ans: 5625.35
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12. Simplify:
(a) 72,965 - 18,638 + 569
Ans: 54,869
(b) 63,256 + 18,547 - 26,598
Ans: 55,205
(c) 98,540 - 12,486 -2,578
Ans: 83,476
(d) 65,328 - 18,590 + 2,89
Ans: 47,027
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13. Find
(a) 1/5 of 20
Ans: 4
(b) 3/8 of 400.
Ans: 150
(c) 4/7 of 147
Ans: 84
(d) 1/9 of 288
Ans: 32
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14. Simplify
(a) 7 /5 - 2/5
Ans: 1
(b) 7/9 + 2/5
Ans: 53/45 =1.177
(c) 1/19 +( 3 ) 1/5 + (2) 1/2
Ans: 5
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15. Write the following in
decimal fractions :
(a) 278 ÷ 10
Ans: 27.8
(b) 7529 ÷ 100
Ans: 75.29
(c) 8 ÷ 1000
Ans: 0.008
(d) 643 ÷ 100
Ans: 6.43
(e) 1896÷1000
Ans: 1.896
(f) 72 ÷ 1000
Ans: 0.072
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16. Find the HCF of the following numbers using prime factorisation method:
(a) 80 and 96
Ans: 16
(b) 54 and 72
Ans: 18
(c) 36,64 and 80
Ans: 4
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17. Find the LCM of the following numbers using prime factorisation method :✓
(a) 30 and 35
Ans: 210
(b) 48 and 72
Ans: 144
(c) 60, 75 and 120
Ans: 600
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18. A factory manufactured 85,640 toys in one week. It sent 27,960 toys in one market and 25,682 toys in second market. How many toys are left in the factory?
Ans:-
toys sent in one market = 27,960
toys sent in second market = 25,682
[ 27,960 + 25,682 = 53,642 ]
It total sent toys = 53,642.
According to question:-
A factory manufactured toys = 85,640
It total sent toys = 53,642.
[ 85,640 - 53,642 = 31,998]
toys are left in the factory = 31,998.
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19. A man wanted to distribute ₹ 8,02,000 among his wife, son and daughter. He gave
₹ 2,52,835 to his daughter, ₹2,57,600 to his son and the rest to his wife. Find the share
of his wife.
Ans:-
He gave his daughter ₹ 2,52,835,
and gave his son ₹2,57,600
[ 2,52,835 + 2,57,600 = 5,10,435 ]
Total amount given ₹ 5,10,435
According to question:
A man has amount = ₹ 8,02,000.
Total gave the amount ₹ 5,10,435
[ 8,02,000 - 5,10,435 = 2,91,565 ]
He gave his wife ₹ 2,91,565.
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20. The total aeroplane fare of 13 persons is ₹ 88,075. What is the fare of one person if the fare of each one is same?
Ans:-
Aeroplane fare of 13 persons = ₹ 88,075
fare of one person 88,075 ÷ 13 = 6775
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21. Find the highest number by which on dividing 118, 148 and 178, we get 2, 3 and 4 as remainders respectively.
Ans:
Substrate the respective remainders from the numbers to get the exactly divisible numbers.
118 - 2 = 116,
148 - 3 = 145,
178 - 4 = 174.
HCF of
116. [ 2x2x29 ]
145. [ 5x29]
174. [ 2x3x29 ]
We require HCF of
116, 145 and 174
Witch is 29.
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22. Write 'T' for true and 'F' for false statements :
(a) 1 is an even but prime number.
Ans: false [ × ]
(b) 2,936 is exactly divisible by 3.
Ans: false [ × ]
(c) 1 is the smallest whole number.
Ans: false [ × ]
(d) Every even number except 2 is composite number.
Ans: true [✓]
(e) 9,99,999 is the smallest 6-digit number.
Ans: false [ × ]
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23. Fill in the blanks :
(a) An acute angle is-------than 90°.
Ans: less
(b) H.C.F. of two co-prime numbers is always -------. Ans: 1
(c) L.C.M. of two prime numbers is equal to their----------. Ans: multiplication
(d) A right angle is-----------than 180°.
Ans: less
(e) A triangle having all sides equal is called --------------. Ans: equilateral triangle
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24. Construct a circle of radius 4 cm and measure its diameter.
Ans: diameter 8cm.
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25. A factory produces 3060 bulbs in 6 days. How many bulbs does it produce in 8 days?
Ans: 4080
production of bulbs in 6 days 3060.
production in 1 day 3060÷6. = 506
production in 8 days 506 × 8 = 4080.
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26. Measure the angles in the figure given below :
(a) ZAOB. 30°
(b) ZAOE. 120°
(c) ZAOD. 90°
(d) ZBOC. 30°
(e) ZBOE. 90°
(f) ZBOD. 60°
(g) ZAOC. 60°
(h) COD. 30°
(i) ZCOE. 60°
6) ZDOE. 30°