Math Practice Problems - Estimated Multiplication

MathScore EduFighter is one of the best math games on the Internet today. You can start playing for free!

Estimated Multiplication - Sample Math Practice Problems

The math problems below can be generated by MathScore.com, a math practice program for schools and individual families. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. In the main program, all problems are automatically graded and the difficulty adapts dynamically based on performance. Answers to these sample questions appear at the bottom of the page. This page does not grade your responses.

Want unlimited math worksheets? Learn more about our online math practice software.
See some of our other supported math practice problems.

Complexity=5

Estimate the product by rounding numbers to the first digit, and then doing mental multiplication.

Answers

Complexity=4

Estimate the product by rounding numbers to the first digit, and then doing mental multiplication.

Problem

Correct Answer

Your Answer

55 × 94 ≈

45,000

450

5,400

Solution
55 × 94 ≈ 60 × 90 = 5,400
The exact answer would be 55 × 94 = 5,170.

Problem

Correct Answer

Your Answer

73 × 43 ≈

280

28,000

2,800

40,000

Solution
73 × 43 ≈ 70 × 40 = 2,800
The exact answer would be 73 × 43 = 3,139.

Complexity=5

Estimate the product by rounding numbers to the first digit, and then doing mental multiplication.

Problem

Correct Answer

Your Answer

57 × 259 ≈

18,000

1,200

10,000

100,000

1,500

Solution
57 × 259 ≈ 60 × 300 = 18,000
The exact answer would be 57 × 259 = 14,763.

Problem

Correct Answer

Your Answer

43 × 550 ≈

200,000

2,400

250,000

300,000

24,000

Solution
43 × 550 ≈ 40 × 600 = 24,000
The exact answer would be 43 × 550 = 23,650.

Learn more about our online math practice software.

"MathScore works."
- John Cradler, Educational Technology Expert