Common Core 1.OA.C.6 worksheet
1st grade (Year 2 in England) · 16 questions · Common Core: 1.OA.C.6, 1.OA.A.1, 1.OA.C.5, 1.OA.B.4 · England: Y1 Addition and subtraction, Y2 Addition and subtraction
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Question 1
15 − 7: first take away 5 to get to 10. How much more must you take away?
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Question 2
Arjun has 16 marbles. Ben has 6. How many more marbles does Arjun have than Ben?
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Question 3
__ + __ = 18 (both numbers the same)
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Question 4
17 − 8 = ?
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Question 5
Work out 2 + 8. Hint: start with the bigger number.
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Question 6
19 + __ = 20
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Question 7
19 − 2 = ?
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Question 8
7 + 7 + 4 = ?
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Question 9
8 + 4 = ?
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Question 10
9 + 2 = ?
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Question 11
Chloe collected 6 balls in the morning and 4 in the afternoon. How many is that altogether?
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Question 12
9 + 9 = ?
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Question 13
Which is a smart way to work out 9 + 10?
- A. Add 9 and 9, then add 2
- B. Double 10, then add 1
- C. Double 9, then take away 1
- D. Double 9, then add 1
Question 14
A fact family uses 9, 6 and one more number. Two facts are 9 + 6 = ? and ? − 6 = 9. What is the missing number?
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Question 15
A ladybird has 8 spots on each wing. How many spots altogether?
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Question 16
A game needs 20 counters. Leo has 17. How many more counters does Leo need?
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