MathIQO worksheet
Recall addition and subtraction facts to 20 · Grade 2 · B2.2
Name: ______________________
Date: ______________________
- 1
What is 1 + 5?
Warm-upAnswer:
- 2
What is 7 + 3?
Warm-upAnswer:
- 3
What is 9 + 7?
Warm-upAnswer:
- 4
What is 14 − 4?
On levelAnswer:
- 5
What is 16 − 6?
On levelAnswer:
- 6
What is 16 − 3?
On levelAnswer:
- 7
Find the missing number: 1 + __ = 20
ChallengeAnswer:
- 8
Find the missing number: 7 + __ = 14
ChallengeAnswer:
- 9
Find the missing number: 2 + __ = 7
ChallengeAnswer:
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Worksheet code: eyJzIjoibnVtYmVyLWFkZC1mYWN0cy10by0yMCIsImQiOls4MzMzMTA4OTgsMTUxMjA1MzQ1NCw2MzQ5MzI2MzYsMTEyNjcwMDE1Myw3NzQyOTI4ODEsMjAzNjI3NDQ3MSwxNDIxODM2ODA2LDE0Mjg3MDYwMiwxNzY2MTYyNzk0XSwidiI6MX0.dca8f136fb4c
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Answer key · Recall addition and subtraction facts to 20
- 1.6 — Counting on 5 from 1 gives 6.
- 2.10 — Counting on 3 from 7 gives 10.
- 3.16 — Counting on 7 from 9 gives 16.
- 4.10 — Counting back 4 from 14 gives 10.
- 5.10 — Counting back 6 from 16 gives 10.
- 6.13 — Counting back 3 from 16 gives 13.
- 7.19 — 20 − 1 = 19, so 1 + 19 = 20.
- 8.7 — 14 − 7 = 7, so 7 + 7 = 14.
- 9.5 — 7 − 2 = 5, so 2 + 5 = 7.