Module 1 lessons 1-3

Module 1 lessons 1-3

When multiplying numbers by 10, 100, or 1000, the digits will shift to the left

• x 10 = shift one column

• x 100 = shift two columns

• x 1000 = shift three columns

All the digits shift together.

Multiple Choice

What equation matches this image?

• 34 x 10

• 34 x 100

• 34 x 1000

Multiple Choice

What is 3.5 x 10?

• 3.50

• 35

• 350

When dividing, the digits will shift to the right.

• divide by 10 -> shift 1 column

• divide by 100 -> shift 2 columns

• divide by 100 -> shift 3 columns

As the digits move to the right, the decimal appears to move to the left.

• Remember to keep all the digits in the same order!

• If there are zeros, they make move into the decimal places and "disappear."

Multiple Choice

What equation matches this model?

• 57 ÷ 10 = 0.57

• 57 ÷ 10 = 5.7

• 57 ÷ 100 = 0.57