Page 28 - SM Class 5 Inner.cdr

= 78 – 20, (Simplifying ‘addition' 5 + 15 = 20)

= 58, (Simplifying ‘subtraction' 78 – 20 = 58)

E xercise 2.7

Simplify as per BODMAS rule :
3
1. 2 of 8 + 6 2. 6 + 10 × 3 – 5 + 20 ÷ 2
3
1
3 ( )
3. of 16 – 8 4. + of 12 ÷ 3 × 2 + 5 – 2
2
4
2
1
1
( )
5. + of 12 ÷ 3 × 2 + 5 – 2 6. 14 + 8 × 2 + 60 ÷ 5
4
4
Chec k Y our Prog r ess
Check Your Progress

1. Arrange in columns and add :

a. 292342, 1454651 and 4681509
b. 402336754, 32133046 and 29517354

2. Arrange in column and find the difference of the following :
a. 689318874 and 897545768 b. 80541658 and 65872549

3. Find the product of following :
a. 86957 × 4365 b. 28312 × 1075

4. Find the quotient and remainder :

a. 75341 by 42 b. 84538560 by 2569

5. Solve these Word Problems :

a. A purse factory produced 2692654 purses in one year. In the next year it
produced 867205 more. How many purses did the factory produced in
the second year?

b. In an election 23875501 votes were polled. There were three candidates
in the election. Two of them got 9823823 and 11575923 votes
respectively. How many votes were polled in favour of the third
candidate?

c. A number when subtracted from 581641200 gives 392715315. Find the
number.

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Mathematics In Focus - 5