In this Grade 4 enVision Mathematics lesson, students learn how to estimate quotients for 3- and 4-digit dividends using mental math strategies, including compatible numbers, multiplication patterns, place-value patterns, and rounding. Part of Chapter 5 on division by 1-digit numbers, the lesson builds on basic division facts to help students apply mental math reasoning to larger numbers like 1,320 ÷ 6 or 5,582 ÷ 7. Students practice choosing the most appropriate estimation strategy depending on the dividend and divisor.
Section 1
Multiplying by Multiples of 10, 100, and 1,000
To multiply a whole number by a multiple of 10, 100, or 1,000, you can multiply the basic fact (the non-zero digits) and then append the total number of zeros from the factors to the product.
Section 2
Place Value Patterns in Division
To divide multiples of 10, 100, or 1,000, you can use a basic division fact and place value. If you know a basic fact like , you can extend it:
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Section 1
Multiplying by Multiples of 10, 100, and 1,000
To multiply a whole number by a multiple of 10, 100, or 1,000, you can multiply the basic fact (the non-zero digits) and then append the total number of zeros from the factors to the product.
Section 2
Place Value Patterns in Division
To divide multiples of 10, 100, or 1,000, you can use a basic division fact and place value. If you know a basic fact like , you can extend it:
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter