# Multiply by Tens

Videos to help Grade 4 students learn how to interpret and represent patterns when multiplying by 10, 100, and 1,000 in arrays and numerically.

Common Core Standards: 4.NBT.5, 4.OA.1, 4.OA.2, 4.NBT.1

## New York State Common Core Math Module 3, Grade 4, Lesson 4

NYS Math Module 3 Grade 4 Lesson 4 Concept Development
Problem 1: Draw number disks to represent products when multiplying by a one-digit number.
Problem 2: Draw number disks to represent products when multiplying by a two-digit number.
NYS Math Module 3 Grade 4 Lesson 4 Homework
Draw number disks and arrows as shown to represent each product.
1. 7 × 100 = __________
7 × 10 × 10 = __________
7 ones × 100 = __________
2. 7 × 1,000 = __________
7 × 10 × 10 × 10 = __________
7 ones × 1,000 = __________
3. Complete the following equations.
a. 8 × 10 = ________ b. ______ × 8 = 800 c. 8,000 = ______ × 1,000
d. 10 × 3 = ______ e. 3 × ______ = 3,000 f. ______ × 3 = 300
g. 1,000 × 4 = ______ h. ______ = 10 × 4 i. 400 = ______ × 100
Draw number disks and arrows as shown to represent each product.
5. 17 × 100 = __________
17 × 10 × 10 = __________
(1 ten 7 ones) × 100 = __________
Decompose each multiple of 10, 100, or 1,000 before multiplying.
9. 5 × 5,000 = _____ × _____ × _________
= ______ × _________ = _________

NYS Math Module 3 Grade 4 Lesson 4 Problem Set
Draw number disks and arrows as shown to represent each product.
1. 5 × 100 = __________
5 × 10 × 10 = __________
5 ones × 100 = __________
Draw number disks and arrows as shown to represent each product.
4. 12 × 10 = __________
(1 ten 2 ones) × 10 = ___________

Draw number disks and arrows as shown to represent each product.
6. 25 × 1,000 = __________
25 × 10 × 10 × 10 = __________
(2 tens 5 ones) × 1,000 = __________

NYS Math Module 3 Grade 4 Lesson 4 Problem Set
Decompose each multiple of 10, 100, or 1,000 before multiplying.
7. 3 × 40 = 3 × 4 × _____
= 12 × ______= _______

9. 4 × 4,000 = _____ × _____× _________
= ____ × _____ = _______
10. 5 × 4,000 = _____ × _____ × _________
= ______ × ______= ______

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