Middle School

Estimate the value of:

1. \( 98.5 \times 13 \)

and

2. \( 102.3 \div 4.7 \)

Answer :

The values are 1300 and 20.6

To estimate the value of 98.5 x 13, we can round the numbers to make calculation easier. Rounding 98.5 to the nearest ten gives us 100, and 13 is left as is because it's already a whole number. Multiplying these rounded numbers gives us:

100 x 13 = 1300

This is a reasonable estimate for 98.5 x 13.

Now, let's estimate 102.3 divided by 4.7. We can round 102.3 up to 103 and 4.7 down to 5 to simplify the division:

103 / 5 = 20.6

This gives us a reasonable estimate for 102.3 / 4.7.

Round 102.3 to 102 and round 4.7 to 5. 102/5 is 20.4


So 20.4 is the answer.


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