Multi-Digit Multiplication

​

Factoid

The heart rates of animals vary greatly. A bat’s heart beats about 750 times in a minute. However, a large whale’s heart beats only about 22 times in a minute.

​Strategies

1. Standard Algorithm

2. Area Model

3. Partial Product

Some text here about the topic of discussion

​Standard Algorithm

​1

750

x 22

​ 1500

​1500

16500

​Partial Product

​

750

x 22​

2 x 0 = 0

2 x 50 = 100

2 x 700 = 1400

20 x 0 = 0

20 x 50 = 1000

20 x 700 = 14000​

​Area Model

​

700 50 0​

​ 20

2

​

​236 x 46

​1951 x 17

​3616 x 18

​345 x 98

​Two-digit

​519 x 4

2823 x ​3

1445 x 5

2204 x 6​

​

​One-digit

Use the strategy that works for you!!!!!​