Add a one-digit number to a two-digit number (no new ten)
1st grade (Year 2 in England) · 16 questions · Common Core: 1.NBT.C.4 · England: Y1 Addition and subtraction, Y2 Addition and subtraction
Name
Date
Score/ 16
Question 1
Sofia worked out 51 + 3 = 81. What mistake did Sofia make?
- A. Added 3 to the tens instead of the ones
- B. Forgot to add the tens
- C. No mistake: it is right
Question 2
13 + 5 = ?
Answer
Question 3
Use the fact 4 + 5 = 9 to work out 94 + 5.
Answer
Question 4
Omar worked out 71 + 2 = 91. What mistake did Omar make?
- A. Added 2 to the tens instead of the ones
- B. Forgot to add the tens
- C. No mistake: it is right
Question 5
22 + 6 = ?
Answer
Question 6
Use the fact 2 + 7 = 9 to work out 32 + 7.
Answer
Question 7
Grace worked out 95 + 1 = 105. What mistake did Grace make?
- A. Added 1 to the tens instead of the ones
- B. Forgot to add the tens
- C. No mistake: it is right
Question 8
20 + 1 = ?
Answer
Question 9
Use the fact 4 + 2 = 6 to work out 64 + 2.
Answer
Question 10
Hana worked out 93 + 1 = 103. What mistake did Hana make?
- A. Added 1 to the tens instead of the ones
- B. Forgot to add the tens
- C. No mistake: it is right
Question 11
52 + 5 = ?
Answer
Question 12
Use the fact 4 + 5 = 9 to work out 54 + 5.
Answer
Question 13
Jamal worked out 52 + 2 = 72. What mistake did Jamal make?
- A. Added 2 to the tens instead of the ones
- B. Forgot to add the tens
- C. No mistake: it is right
Question 14
50 + 2 = ?
Answer
Question 15
Use the fact 2 + 4 = 6 to work out 32 + 4.
Answer
Question 16
Kwame worked out 81 + 5 = 131. What mistake did Kwame make?
- A. Added 5 to the tens instead of the ones
- B. Forgot to add the tens
- C. No mistake: it is right
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