Add Three Numbers

About this worksheet

“Add Three Numbers” is sheet 20 of 30 in our free 1st Grade Math Worksheets collection, written for children aged 6–7.

In the set it comes after “Reading a Tally Chart” and before “Doubles Plus One”. Working through them in that order, one sheet a day, builds the skill a step at a time.

What this worksheet practices

• 1.OA.A.2 · Common Core Math · Grade 1

  Operations & Algebraic Thinking

  Children work on understanding what addition and subtraction mean, solving word problems with them, and building fluency with adding and subtracting.

How to use this worksheet

1. 1

   Use "Fact Families" as the bridge sheet. A child who sees that 3 + 4 = 7 and 7 − 4 = 3 are the same fact stops treating subtraction as a separate thing to memorise, which halves the work.

2. 2

   For word problems, have your child underline the question before touching the numbers. Most first-grade word-problem errors are reading errors, not arithmetic ones.

3. 3

   Do "Tens and Ones" before "Compare Two-Digit Numbers". Comparing 47 and 74 is guesswork until place value is solid.

4. 4

   On "Telling Time", read the analogue clock aloud as "half past three" as well as "three thirty". Children who only learn the digital form struggle when the wording changes on a test.

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  Adding Tens

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  Time to the Half Hour

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  Measure with Cubes

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  Reading a Tally Chart

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  Doubles Plus One

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  Make a Ten to Add

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  Subtract Tens

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  Measure in Inches