DECIMAL MULTIPLICATION

 DECIMAL MULTIPLICATION

 Decimal Multiplication

 

When multiplying decimals, we follow these simple steps:

1.    Multiply like regular numbers

Ignore the decimal points at first

Just multiply the numbers as if they were whole numbers

2.    Count decimal places

Count the total number of decimal places in ALL numbers being multiplied

This tells you how many decimal places your answer should have

3.    Place the decimal point

Count from right to left in your answer

Place the decimal point to give the correct number of decimal places

Examples:

Let's solve these together:

1.    2.3×1.2

Multiply: 23×12=276

Count decimal places: 2.3 has 1, 1.2 has 1, so total = 2

Place decimal point: 2.76

2.    0.5×0.4

Multiply: 5×4=20

Count decimal places: 0.5 has 1, 0.4 has 1, so total = 2

Place decimal point: 0.20

 WORKSHEET