Worksheet: Making 100 with Tens and Ones

In this worksheet, we will practice decomposing 100 into tens and ones and modeling the decomposition with equations.


Benjamin has 100 counters in ten frames. He knows that 10 tens is 100.

Think about how else we can make 100.

Fill in the blank: He colored 4 groups of tens and 4 ones blue. He colored 5 groups of tens and ones pink.

Find the missing number. 44+=100


Michael is looking for ways to make 100.

What number is missing? 55+=100

Work out the new missing number to find another way to make 100. 78+=100


What is the missing number?


What is the missing number?


What is the missing number?

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