Name: ___________________

Date:___________________

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Grade 2 - Mathematics
1.42 Adding and Subtracting 9 Mentally

Method:
  1. Read out the equations given.
  2. 9 can be written as 10-1.
Example: 43-9
We can write this as 43-10+1
Answer : 34.

Example: 53+9
We can write this as 53+10-1
Answer : 62


Directions: Find the missing number. Also write atleast 5 examples of your own.

Name: ___________________

Date:___________________

Grade 2 - Mathematics
1.42 Adding and Subtracting 9 Mentally

Q 1: 88 + 9 = ? (Hint: 88+10-1)
96
97
99
98

Q 2: 23 + 9 = ? (Hint: 23+10-1)
31
33
32
35

Q 3: 54 + 9 = ? (Hint: 54+10-1)
62
65
64
63

Q 4: 61 - 9 = ? (Hint: 61-10+1)
53
51
52
50

Q 5: 62 - 9 = ? (Hint: 62-10+1)
51
53
54
52

Q 6: 47 - 9 = ? (Hint: 47-10+1)
37
38
36
39

Q 7: 31 - 9 = ? (Hint: 31-10+1)
21
20
23
22

Q 8: 38 + 9 = ? (Hint: 38+10-1)
49
46
47
48

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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