Free · Kindergarten to Grade 4 · Answer keys
Number bonds and cut-and-paste sorts
Number bond worksheets to 5, 10, 20 and 100, and cut-and-paste sorting pages for Kindergarten to Grade 4: even and odd, more or less than 50, pairs that make 10, rounding, facts with the same product, and fractions compared with one half.
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- Number bonds to 5
12 number bonds to 5 with one number missing: the whole or one of the parts. Free printable with an answer key.
- Number bonds to 10
12 number bonds to 10 with one number missing: the whole or one of the parts. Free printable with an answer key.
Grade 1
- Number bonds to 20
12 number bonds to 20 with one number missing: the whole or one of the parts. Free printable with an answer key.
- Number bonds with tens to 100
12 number bonds with tens to 100 with one number missing: the whole or one of the parts. Free printable with an answer key.
- Cut and paste: more or less than 50
A cut-and-paste sorting page: 12 cards to sort into 2 columns, less than 50, more than 50. With an answer key.
- Cut and paste: pairs that make 10
A cut-and-paste sorting page: 12 cards to sort into 2 columns, makes 10, does not make 10. With an answer key.
Grade 2
- Cut and paste: even and odd numbers
A cut-and-paste sorting page: 12 cards to sort into 2 columns, even, odd. With an answer key.
Grade 3
- Cut and paste: rounding to the nearest ten
A cut-and-paste sorting page: 12 cards to sort into 2 columns, rounds to 40, rounds to 50. With an answer key.
- Cut and paste: facts with the same product
A cut-and-paste sorting page: 12 cards to sort into 3 columns, 24, 36, 48. With an answer key.
Grade 4
- Cut and paste: fractions compared with one half
A cut-and-paste sorting page: 12 cards to sort into 3 columns, less than 1/2, equal to 1/2, more than 1/2. With an answer key.
How to teach it
- Number bonds: the whole goes in the top circle, the two parts below. Two numbers you know give the third.
- Sorts: cut out the cards, decide where each belongs, then glue it in its column.
Questions teachers ask
- What is a number bond?
- A picture of a number and two parts that make it: 10 at the top, 7 and 3 below. It shows that addition and subtraction are two views of one fact.
- Why use cut-and-paste sorts?
- Sorting asks students to decide and explain, not just compute, and handling the cards keeps younger students working with the idea for longer.
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