Question

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

Answer 1

Answer:

(b)78+43

Step-by-step explanation:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.

Answer 2

Answer:

a) 70 +40-110

b) 80+40-120

c)880+730- 1610

d) 570+430 - 1000

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