Recalling and using addition and subtraction facts to 20 fluently, and derive and use related facts up to 100.

Number bonds to 20

Make it

Worksheets in a book

bonds to 20

Make a quick worksheet to practice.

String of beads

bonds to 20

I used my toddler's beads you can also check your arts & crafts basket as well.

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Numicon

bonds to 20

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Interlocking cubes

bonds to 20

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Number bonds to 100

Make it

Worksheets in 10s

bonds to 100

Make a quick worksheet to practice number bonds to 100 using tens.

Including ones and tens

bonds to 100 abacus

When your child gets confident with number bonds to 100 using tens, try to introduce ones as well. I do recommend to use abacus. I haven't found a better resource. Make your own worksheets to practice.

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Abacus using tens

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