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**Questions | PowerPoint | Answers**

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1 Count back from a three-digit number in ones

2 Subtract a single-digit number from a three-digit number

3 Solve missing number problems for addition and subtraction of ones with three-digit numbers

4 Solve missing number problems for addition with multiples of 10 with three-digit answers

5 Subtract two multiples of 10 beyond 100

6 Solve missing number problems for subtraction with multiples of 10 with three-digit answers

7 Count back in tens from a three-digit number

8 Subtract a multiple of 10 from a three-digit number mentally

9 Solve missing number problems for addition and subtraction of tens with three-digit numbers

10 Add and subtract two multiples of 100 within 1000

11 Solve missing numbers for addition and subtraction with multiples of 100 within 1000

13 Subtract a multiple of 100 from a three-digit number

14 Solve missing number problems for addition and subtraction of hundreds with three-digit numbers

15 Subtract numbers with up to three digits using the column method

16 Check by using the inverse operation with three-digit numbers

17 Solve missing number problems for addition and subtraction with three-digit numbers