Letter To Family - Multiplying And Dividing Decimals
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1Chapter 9 9
What We’re Learning
During the next few weeks, our math class will be
learning about multiplying and dividing decimals.
You can expect to see work that provides
practice with multiplying decimals. Here are
samples you may use to give help if needed.
Guiding Your Child
Multiplying a Decimal by a Decimal
You can multiply decimals the way you multiply whole numbers. Then show the same
number of decimal places in the product as there are in the factors.
Find 1.4
2.9.
Step 1 Multiply the factors, disregarding
Step 2 Place the decimal point. The
the decimal points.
number of decimal places in the
product equals the total number of
1.4
decimal places in the factors.
2.9
←
126
1.4
one decimal place
←
one decimal place
280
2.9
←
two decimal places
4.06
406
Dividing a Whole Number by a Decimal
You can divide decimals the way you divide whole numbers.
Find 2.4 1 2
n
Step 1 To change the
Step 2 Multiply the
Step 3 Complete the
divisor to a whole number,
dividend by 10 so the
division.
multiply it by 10.
quotient will stay the same.
5 ← quotient
2.4
10
24
12
10
120
24 1 2 0
120
divisor → 24 1 2
24 1 2 0 ← dividend
0
Sincerely,
Your Child’s Teacher
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