Math Grade 2-3

Doubles and Near Doubles in Addition

Use facts you know to add numbers that are close

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Use facts you know to add numbers that are close

Math - Grade 2-3

Instructions: Read each problem carefully. Use doubles facts to help you solve near doubles. Show your work in the space provided.
  1. 1
    Two equal groups of four counting cubes.

    Solve the doubles fact: 4 + 4 = ____.

  2. 2
    Two rows of counters showing five and six, with one extra highlighted.

    Use the double 5 + 5 to solve 5 + 6. What is the sum?

  3. 3
    Two equal groups of seven star counters.

    Solve: 7 + 7 = ____.

  4. 4
    Two rows of counters showing seven and eight with one extra counter.

    Use a near double to solve 7 + 8. Explain your thinking.

  5. 5
    Two rows of tiles showing six and seven, with one extra tile.

    Which doubles fact can help you solve 6 + 7? Write the doubles fact and the answer to 6 + 7.

  6. 6
    Two equal groups of nine buttons.

    Solve: 9 + 9 = ____.

  7. 7
    Two groups of stickers showing eight and nine, with one extra sticker highlighted.

    Maya has 8 stickers. Her friend has 9 stickers. Use a near double to find how many stickers they have in all.

  8. 8
    Three counter models, with the near-double model circled.

    Circle the near double addition fact: 3 + 3, 4 + 5, or 6 + 2. Then solve it.

  9. 9
    A basket with five red apples and five green apples.

    There are 5 red apples and 5 green apples in a basket. How many apples are there in all?

  10. 10
    Two full ten-frames with one extra counter.

    Use 10 + 10 to solve 10 + 11. What is the sum?

  11. 11
    Two counters and three counters, with the extra counter highlighted.

    Solve: 2 + 3 = ____. Tell which doubles fact helped you.

  12. 12
    A number line with one jump of six spaces and another jump of seven spaces.

    A number line shows a jump of 6 and another jump of 7. What addition sentence does it show, and what is the sum?

  13. 13
    Two rows of counters showing eight and nine, with one extra counter.

    Fill in the blanks: 8 + 8 = ____, so 8 + 9 = ____.

  14. 14
    Comparison of two equal rows of six counters and a near double with six and seven.

    Which sum is larger, 6 + 6 or 6 + 7? Explain how you know.

  15. 15
    Two block towers showing nine blocks and ten blocks, with one extra block highlighted.

    Liam builds 9 blocks in one tower and 10 blocks in another tower. Use a near double to find the total number of blocks.

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