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.

Q1:

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

Q2:

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

Q3:

What is the missing number?

Q4:

What is the missing number?

Q5:

What is the missing number?

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