Grades 2–3
Hundreds, Tens and Ones
Ten three-digit numbers to break into hundreds, tens and ones and write in expanded form.
Math worksheet · Place value and number decomposition
Number Bonds Within 20
Twelve number bonds. Kids find the missing part or the whole, breaking numbers up to 20 into two parts.
- Grade level
- 1st grade
- Time
- About 15 minutes
- Answer key
- Yes, page 2 of the PDF
- Kids practice
- Place value, Expanded form, Comparing and ordering numbers, Rounding
What kids do
“The two parts make the whole. Write the missing number.”
Teacher tip
Use two-color counters: one color for each part. Flip some over to find a different bond for the same whole.
How to use it
- Read each number out loud as a class so kids hear the place names.
- Let kids use a place value mat or a folded paper chart under their sheet.
- Do the first problem together under a document camera, then let kids finish on their own.
Watch for
Rounding the wrong digit. Have kids underline the place they are rounding to first.
Talk about it
- Why do we round? When is an estimate good enough?
- Which problem was the hardest? What made it hard?
Take it further
Have kids find big numbers in the newspaper or a fact book and write them in expanded form.
US Letter, prints well in black and white. Free for home and classroom use: print as many copies as you need.
More place value and number decomposition worksheets
Grades 3–5
Expanded Form and Word Form
Numbers into the thousands written three ways: standard form, expanded form and word form.
Grades 3–4
Rounding to 10, 100 and 1,000
Eighteen numbers to round to the nearest ten, hundred and thousand. Five or more rounds up.
Grades 1–2
Ten More, Ten Less, One More, One Less
Eight numbers in the middle of a cross. Kids write ten more, ten less, one more and one less around each.
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