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
Answer: 186.381
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
Answer: 112.49775
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
Answer: 1.07111
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
Answer: 31.775
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
Answer: 25.64789
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