TutorTomTutorTom

Estimation in Multiplication

Grade 4 · Math · Multi-Digit Multiplication · Newfoundland and Labrador, Canada

Lesson Summary

Round numbers before multiplying to quickly estimate a product. Estimation helps you check whether your exact answer makes sense.

Explanation

Estimating means rounding each number to the nearest ten before you multiply. For 38 × 7, round 38 to 40 and multiply: 40 × 7 = 280. The exact answer is 266, so 280 is a close estimate. Estimation is useful when you want a quick answer or when you want to check your work. If your exact answer is far from your estimate, you probably made a mistake somewhere.

Practice Questions

Q1: Estimate 49 × 6 by rounding 49 to the nearest ten first.
Answer: 300 (50 × 6 = 300)
Q2: Estimate 32 × 8 by rounding 32 to the nearest ten first.
Answer: 240 (30 × 8 = 240)
Q3: Estimate 67 × 4 by rounding 67 to the nearest ten first.
Answer: 280 (70 × 4 = 280)
Learn with TutorTom nowExam practice

People Also Ask

What is Estimation in Multiplication in Grade 4 Math?+

Estimation in Multiplication is a lesson in the Multi-Digit Multiplication chapter of Grade 4 Math. It is part of the Newfoundland and Labrador, Canada school curriculum and covers key concepts that students need to understand at this level.

What grade level covers Estimation in Multiplication?+

Estimation in Multiplication is taught in Grade 4 as part of the Math curriculum in Newfoundland and Labrador, Canada.

How can I help my child with Multi-Digit Multiplication in Math?+

Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Multi-Digit Multiplication topics.

More Lessons in Multi-Digit Multiplication

Multiplying by 10, 100, and 1,000Multiplying Two Digits by One DigitMultiplying with RegroupingMultiplying Two Digits by Two Digits→ Estimation in Multiplication

Explore Related Content

→ All Math chapters for Grade 4→ Grade 3 Math – Newfoundland and Labrador→ Grade 5 Math – Newfoundland and Labrador→ Browse all Canada states