SME
Grade 5 Math · Problem type
Divide decimals by whole numbers
Use this for 7.2 ÷ 4: a decimal shared into equal parts.
Diagram
7.2 shared into 4 equal parts: 1.8 in each.
This is an example. Type your own values to start a new problem.
Decimal
÷
Equal parts
=
Each share
Formulas
7.2 ÷ 4 = 1.8
Decimal ÷ equal parts = each share
Assumptions
•
Think of the decimal as tenths or hundredths: 7.2 is 72 tenths.
•
Share the tenths, then write the answer back as a decimal.
•
Decimals to 99.99, whole numbers from 2 to 9. Each share comes out in hundredths.
Step-by-step
WE KNOW
Decimal: 7.2
Equal parts: 4
FIND
each share
Step 1 · Find each share
7.2 ÷ 4 = ?
Decimal ÷ equal parts = each share
Write the decimal as tenths (or hundredths), share them, then write the decimal.
7.2 = 72 tenths
72 ÷ 4 = 18 tenths = 1.8
Each share = 1.8
Check
Put the numbers back in. Both sides should match.
1.8 × 4 = 7.2 ✓
Topic check
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Related lessons
Add, subtract, multiply and divide decimals
Main lesson
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Use this for “About how much is 4.8 × 6.2?” by rounding each to the nearest whole number.