Page 129 - Start Up Mathematics_1

2 Circle the correct answer.

(a) 78 + 20 = 98 or 90 or 78 (b) 13 + 69 = 72 or 82 or 79

(c) 83 – 43 = 43 or 83 or 40 (d) 70 – 28 = 58 or 42 or 52

(e) 55 – 33 = 44 or 22 or 11 (f) 47 + 16 = 63 or 72 or 53

Little Genius!

(a) Sonal had 25 toffees. Her father gave her 16 more. She gave 10 toffees to her
sister. How many toffees does she have now?
(b) There were 22 crocodiles in a zoo. 21 more crocodiles were brought from
another place. Then 12 crocodiles were taken away. How many crocodiles are
there in the zoo now?

(c) There are 14 twins in the children’s ward. 12 more children join them. How
many children are there in the ward now?

VALUES AND LIFE SKILLS

Tens Ones
(a) There were 28 students in a class.

15 new students joined in. How
many students are there in the
class now? Is it good to make
friends with new students?

Answer: ________________

Tens Ones
(b) In a school cricket match, Devesh
makes 56 runs before lunch. After
lunch, he makes 39 more runs. How

many runs does Devesh make in all?
Why is it good to play games?

Answer: ________________

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