Question

what is the answer i have been stuck for fcking 30 minutesEstimate the sum by rounding each number to the nearest whole number and then adding?
3.2 + 7.202
The sum is approximately

Answer 1

. Estimate the sums of 72 and 48

Solution:

We round the number to the nearest 10.

72 → 70

48 → 50

So, 72 is nearest to 70 and 48 is nearest to 50

70 + 50 = 120

Thus the estimated sum = 120

2. Estimate the sums to the nearest ten and also find the actual sum of 87 and 79.

Solution:

We round the number to the nearest 10.

87 → 90

79 → 80

So, 87 is nearest to 90 and 79 is nearest to 80

90 + 80 = 170

Thus the estimated sum = 170

The actual sum of 87 and 79

87 + 79 = 166

Thus the actual sum = 166

Note:To estimate to the nearest 10, we see the digit/number at one’s place. It is converted to 0 or 10 as proper. If the digit/number is < 10/2, it is converted to zero and if it is > 10/2, it is converted to 10.

In case of three digit numbers we can only round the number to the nearest tens place i.e. only one place estimate.

Answer 2

Answer:

maybe 10.2.

Step-by-step explanation:

i am not sure