Name: ___________________Date:___________________

 Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

### Grade 1 - Mathematics3.15 Find the Mystery Number (Single Digits)

 Method: When the operand is + or addition, we need to subtract the number present with the operand from the sum. When the operand is - or subtraction , we need to subtract the difference from the number present along with the operand. Example: 5 - ? = 2 That implies 5 - 2 = 3 Answer: 3 Example: 5 + ? = 13 13 - 5 = 8 Answer: 8 Directions: Answer the following questions. Also write at least ten examples of your own.
 Q 1: Find the missing number: 7 + ? = 10Answer: Q 2: Find the missing number: 8 + ? = 17Answer: Q 3: Find the missing number: 3 + ? = 8Answer: Q 4: Find the missing number: 3 + ? = 11Answer: Q 5: Find the missing number: 3 - ? = 0Answer: Question 6: This question is available to subscribers only! Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only! Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!