Module 5 Into Math

Module 5: Multiply by 1-digit numbers

Multiply using Area Models

4 x 123

You can break a number apart into its place values to make it easier to multiply large numbers

Multiple Choice

What equation can be written by using the area model of multiplication pictured?

• 74 X 2 =

• 70 + 4

• 70 X 2 + 4

• 72 + 6

Multiple Choice

Using Area Model Multiplication, solve the following equation. (Use your scratch paper)

• 76

• 144

• 148

• 146

Multiple Choice

Based on the area model, what is 7 x 13?

• 70

• 21

• 91

Multiple Choice

What problem and answers match this area model?

• 40 + 40 + 2 + 2 + 6 + 6 = 96

• 40 + 2 + 6 = 48

• 242 + 12 = 254

• 240 + 12 = 252

Multiple Choice

What is the final answer?

• 300

• 324

• 342

Break apart your factor into more friendly numbers to multiply

Multiply both parts by the other facto

​

Use expanded for and the distributive property to multiply

Multiple Choice

Which of these uses expanded form and the distributive property to find 3 x 49?

• (3 x 40) + (9)

• (3 x 4) + (3 x 9)

• (3 x 40) + (3 x 9)

• (3 x 4) + (3 x 9 x 10)

Multiple Choice

Which of these uses expanded form and the distributive property to find 7 x 81?

• (7 x 80) + (7)

• (7 x 80) + (7 x 1)

• (7 x 80) + (7 x 7)

• (7 x 10) + (7 x 8)

​Multiply using Place Value

45 x 5

1. Line up your numbers vertically, with the ones in the ones column and the tens in the tens column

2. Multiply in the ones place, regroup if necessary

3. Multiply in the tens place

Multiple Choice

20 X 8

• 16

• 200

• 160

• 168

Multiple Choice

Multiply: 
7 x 46 = 

• 322

• 233

• 96

• 388

Multiple Choice

19x5

• 50

• 95

• 100