Question

PLEASE HELP ME!

For exercises 2-5, what is the best estimate for each product or quotient? Use compatible numbers.



8.3 x 4.9 =

12.1 x 2.95 =

60.94 ÷ 5.7 =

32.79 ÷ 3.1 =

Answer 1

(a) 8.3 x 4.9 = 40

(b) 12.1 x 2.95 = 36

(c) 60.94 ÷ 5.7 = 10

(d) 32.79 ÷ 3.1 = 11

Explanation:

Here, the given expressions are:

(a) 8.3 x 4.9

Now, here 8.3 can be approximated as 8

4.9 can be approximated as 5.0

So, 8.3 x 4.9 ≈ 8 x 5 = 40

Hence, the suitable estimated product for 8.3 x 4.9 = 40

(b) 12.1 x 2.95

Now, here 12.1 can be approximated as 12.

2.95 can be approximated as 3.0

So, 12.1 x 2.95 ≈ 12 x 3 = 36

Hence, the suitable estimated product for 12.1 x 2.95 = 36

(c) 60.94 ÷ 5.7

Now, here 60.94 can be approximated as 61.

5.7 can be approximated as 6

So, 60.94 ÷ 5.7 ≈ 61 ÷ 6 = 10 . 16

Hence, the suitable estimated quotient for 60.94 ÷ 5.7 = 10

(d) 32.79 ÷ 3.1

Now, here 32.79 can be approximated as 33.

3.1 can be approximated as 3.

So, 32.79 ÷ 3.1 ≈ 33 ÷ 3 = 11

Hence, the suitable estimated quotient for 32.79 ÷ 3.1 = 11