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Third Class maths · C.2 · Expanded Form and Standard Form

Write numbers in standard form to 999

Example: 400 + 90 + 1 = 491

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  1. Write 100 + 30 + 8 as a number.

    Answer: 138

  2. Write 200 + 20 + 5 as a number.

    Answer: 225

  3. Write 200 + 10 + 8 as a number.

    Answer: 218

Tip: Example: 400 + 90 + 1 = 491

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Curriculum

Common Core: 2.NBT.A.1, 2.NBT.A.3

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On paper: this skill is in the printable pack Grade 3 Common Core Math: Number and Operations, with an answer key.

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