Question

1. Estimate each of the following sum to the nearest tens,
(a) 67 + 40
(b) 78 +43
(c) 881 + 728
(d) 567 + 432
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Answer 1

Answer:

1=107

2=121

3=1609

4=999

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

A. 10

B. 12

12 is because as we can see that the sum of the ones will give 1 on the tens so adding 11+1=12

C. 10

D.9

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