The rainfall for the last three months of school was 4.98 inches, 9.27 inches, and 0.62 inches. Estimate the total rainfall for the three months by using front-end estimation.

1. about 14 in

2. about 47 in.

3. about 15 in.

4. about 16 in.

The first thing you should do is add the whole numbers of each month:

4 + 9 + 0 = 13

The second is to round the decimals to the nearest whole number:

0.98 + 0.27 + 0.62

0.98 is approximately 1

0.27 + 0.62 = 0.89

0.89 is approximately 1

We have then:

0.98 + 0.27 + 0.62 is approximately 2.

Then, we add both numbers:

13 + 2 = 15

answer:

the total rainfall for the three months by using front-end estimation is

3. about 15 in.