- Multiply and Divide Decimals
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- Decimal Multiplication
- Multiplication of a Decimal by a Whole Number
- Decimal Multiplication: Problem Type 1
- Decimal Multiplication: Problem Type 2
- Multiplication of a Decimal by a Power of Ten
- Multiplication of a Decimal by a Power of 0.1
- Multiplication of Decimals That Have a Product Less Than 0.1
- Word Problem With Multiplication of Decimal and Whole Number
- Word Problem With Multiplication of Two Decimals
- Word Problem With Multiple Decimal Operations: Problem type 1
- Whole Number Division With Decimal Answers
- Division of a Decimal by a Whole Number
- Division of a Decimal by a 1-digit Decimal
- Division of a Decimal by a 2-digit Decimal
- Division of a Decimal by a Power of Ten
- Division of a Decimal by a Power of 0.1
- Decimal Division With Rounding
- Word Problem With Division of a Decimal and a Whole Number
- Word Problem With Division of Two Decimals
- Word Problem With Multiple Decimal Operations: Problem Type 2
- Average of Two Numbers
Multiplication of a Decimal by a Whole Number
Decimal multiplication is like whole number multiplication.
Rules for Multiplication of a Decimal by a Whole Number
In the multiplication of a decimal number by a whole number, we first multiply the numbers by ignoring the decimal point.
We then put the decimal point before as many places in the product as there are in the decimal number.
Multiply 0.13 × 25
Solution
Step 1:
0.13 × 25
Multiplying without decimal point 13 × 25 = 325
Step 2:
The number of decimal places in 0.13 is two
The number of decimal places in 25 is zero
So the product has two decimal places, i.e., 3.25
Multiply 0.24 × 18
Solution
Step 1:
0.24 × 18
Multiplying without decimal point 24 × 18 = 432
Step 2:
The number of decimal places in 0.24 is two
The number of decimal places in 18 is zero
So the product has two decimal places, i.e., 4.32