# McGraw Hill Math Grade 6 Lesson 12.3 Answer Key Estimating Decimal Products

Practice questions available in McGraw Hill Math Grade 6 Answer Key PDF Lesson 12.3 Estimating Decimal Products will engage students and is a great way of informal assessment.

## McGraw-Hill Math Grade 6 Answer Key Lesson 12.3 Estimating Decimal Products

Exercise Estimate

Question 1.
23.01 × 8.1

There are 3 decimal places in both numbers.
Ignore the decimals and complete the multiplication operation.
Rewrite the product with 3 decimal places.
So, the product is 186.381
Estimated product is 186

Question 2.
$6.75 × 4.73 Answer: 31.9275 There are 4 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 4 total decimals. So, the product is 31.9275 Estimated product is 32 Question 3. 101.51 × 4.5 Answer: 456.795 There are 3 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. Rewrite the product with 3 decimal places. So, the product is 456.795 Estimated product is 457 Question 4. 32.25 × 21.1 Answer: 680.475 There are 3 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. Rewrite the product with 3 decimal places. So, the product is 680.475 Estimated product is 680 Question 5.$2.25 × 49.999

There are 5 decimal places in both numbers.
Ignore the decimals and complete the multiplication operation.
Rewrite the product with 5 decimal places.
So, the product is $112.49775 Estimated product is$112.5

Question 6.
.230 × 4.657

There are 6 decimal places in both numbers.
Ignore the decimals and complete the multiplication operation.
Rewrite the product with 6 decimal places.
So, the product is 1.07111
Estimated product is 1

Question 7.
10.501 × $5.43 Answer: 57.02 There are 5 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. Rewrite the product with 5 decimal places. So, the product is$57.02043
Estimated product is $57 Question 8. 45.45 × 21.21 Answer: 963.9945 There are 4 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 4 total decimals. So, the product is 963.9945 Estimated product is 964 Question 9. 57.35 × .499 Answer: 28.61765 There are 5 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. Rewrite the product with 5 decimal places. So, the product is 28.61765 Estimated product is 29 Question 10. .867 ×$19.3
Answer: $16.7331 There are 4 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 4 total decimals. So, the product is$16.7331
Estimated product is $17 Question 11. .75 × 25.43 Answer: 19.0725 There are 4 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 4 total decimals. So, the product is 19.0725 Estimated product is 19 Question 12. 1.95 × 36.36 Answer: 70.902 There are 4 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 4 total decimals. So, the product is 70.902 Estimated product is 71 Question 13. 23.986 × 11.111 Answer: 266.508446 There are 6 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 6 total decimals. So, the product is 266.508446 Estimated product is 266.5 Question 14. 22.989 ×$13.89
Answer: $319.31721 There are 5 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 5 total decimals. So, the product is$319.31721
Estimated product is $320 Question 15. 1.8 × 1.982 Answer: 3.5676 There are 4 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 4 total decimals. So, the product is 3.5676 Estimated product is 3.6 Question 16. 27.63 ×$3.54
Answer: $97.8102 There are 4 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 4 total decimals. So, the product is$97.8102
Estimated product is $98 Question 17. 10.1010 × 7.3 Answer: 73.7373 There are 5 decimal places in both numbers. Ignore the decimals and complete the multiplication operation. So, rewrite the product with 5 total decimals. So, the product is 73.7373 Estimated product is$74

Question 18.
7.75 × 4.1

There are 3 decimal places in both numbers.
Ignore the decimals and complete the multiplication operation.
So, rewrite the product with 3 total decimals.
So, the product is 31.775
Estimated product is 32

Question 19.
17.11 × 1.499

There are 5 decimal places in both numbers.
Ignore the decimals and complete the multiplication operation.
So, rewrite the product with 5 total decimals.
So, the product is 25.64789
Estimated product is 26

Question 20.
$19.45 × 1.73 Answer:$33.6485

There are 4 decimal places in both numbers.
Ignore the decimals and complete the multiplication operation.
So, rewrite the product with 4 total decimals.
So, the product is $33.6485 Estimated product is$34