Decimals - Multiply and Divide Powers of Ten

Front

What is a decimal?

Back

A decimal is a way of representing fractions using a point (decimal point) to separate the whole number part from the fractional part.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does it mean to multiply by a power of ten?

Back

Multiplying by a power of ten means to increase the value of a number by moving the decimal point to the right. For example, multiplying 2.5 by 10 gives 25.

Tags

CCSS.5.NBT.A.2

Front

What does it mean to divide by a power of ten?

Back

Dividing by a power of ten means to decrease the value of a number by moving the decimal point to the left. For example, dividing 25 by 10 gives 2.5.

Tags

CCSS.5.NBT.A.2

Front

How do you divide a decimal by 10?

Back

To divide a decimal by 10, move the decimal point one place to the left. For example, 3.2 ÷ 10 = 0.32.

Tags

CCSS.5.NBT.B.7

Front

What is 32 ÷ 1000?

Back

0.032

Tags

CCSS.5.NBT.A.2

Front

What is 55 ÷ 10?

Back

5.5

Tags

CCSS.5.NBT.A.2

Front

What is 18.4 ÷ 100?

Back

0.184

Tags

CCSS.5.NBT.B.7

Front

What is 0.9 x 10?

Back

9

Tags

CCSS.5.NBT.B.7

Front

Which way does the decimal move when you divide by a power of 10?

Back

Left

Tags

CCSS.5.NBT.A.2

Front

Which way does the decimal move when you multiply by a power of 10?

Back

Right

Tags

CCSS.5.NBT.A.2