Here are the solutions for the multiplication problems. To solve these, you can multiply the numbers as if they were whole numbers first, and then move the decimal point in your answer to the left based on how many decimal places were in the original question.
1. 13 x 7.1
* Multiply $13 \times 71 = 923$.
* There is
1 decimal place in 7.1.
* Move the decimal point 1 spot to the left:
92.3
2. 24 x 8.2
* Multiply $24 \times 82 = 1968$.
* There is
1 decimal place in 8.2.
* Move the decimal point 1 spot to the left:
196.8
3. 35 x 5.3
* Multiply $35 \times 53 = 1855$.
* There is
1 decimal place in 5.3.
* Move the decimal point 1 spot to the left:
185.5
4. 17 x 9.6
* Multiply $17 \times 96 = 1632$.
* There is
1 decimal place in 9.6.
* Move the decimal point 1 spot to the left:
163.2
5. 28 x 6.4
* Multiply $28 \times 64 = 1792$.
* There is
1 decimal place in 6.4.
* Move the decimal point 1 spot to the left:
179.2
6. 25 x 9.8
* Multiply $25 \times 98 = 2450$.
* There is
1 decimal place in 9.8.
* Move the decimal point 1 spot to the left: 245.0, which is just
245.
Final Answer:
1. 92.3
2. 196.8
3. 185.5
4. 163.2
5. 179.2
6. 245
Parent Tip: Review the logic above to help your child master the concept of multiply decimals by whole numbers worksheet.
