Multiplying Decimals
Grade 5 · Math · Decimals · Kansas, USA
Lesson Summary
Multiply decimals by ignoring the decimal point at first, then placing it in the product.
Explanation
To multiply decimals, first multiply the numbers as if they were whole numbers without worrying about the decimal point. After you get the product, count the total number of decimal places in both original numbers. Then place the decimal point in your answer so it has that many decimal places. For example, 0.3 x 0.2 is treated as 3 x 2 = 6, and since there are two total decimal places, the answer is 0.06.
Practice Questions
Q1: What is 1.2 x 0.3?
Answer: 0.36. Multiply 12 x 3 = 36. There are two decimal places total, so the answer is 0.36.
Q2: What is 2.5 x 4?
Answer: 10.0 or 10. Multiply 25 x 4 = 100. There is one decimal place, so the answer is 10.0.
Q3: What is 0.6 x 0.7?
Answer: 0.42. Multiply 6 x 7 = 42. There are two decimal places total, so the answer is 0.42.
People Also Ask
What is Multiplying Decimals in Grade 5 Math?+
Multiplying Decimals is a lesson in the Decimals chapter of Grade 5 Math. It is part of the Kansas, USA school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Multiplying Decimals?+
Multiplying Decimals is taught in Grade 5 as part of the Math curriculum in Kansas, USA.
How can I help my child with Decimals in Math?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Decimals topics.