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Worksheet: Addition Strategies for Sums up to 20: Doubles Plus One

Q1:

Use

to find

Q2:

Which addition sentence is equal to 7 + 8?

  • A7 + 8 +1
  • B8 + 8 +1
  • C13 + 1
  • D7 + 7 + 1
  • E7 + 7 + 7

Q3:

Notice that 4 is one more than 3.

So the answer to 3 + 4 is one more than the answer to 3 + 3 .

If 3 + 3 = 6 , which of the following is equal to 3 + 4 ?

  • A 3 + 4 + 4
  • B 6 + 4
  • C 6 + 1

Q4:

Use

to find