Adding and Subtracting

IXL Adding and Subtracting Extension

Addition

1. B.1 Addition facts up to 20

2. B.2 Addition facts up to 20: word problems

3. B.3 Complete the addition sentence: facts up to 20

4. B.4 Add two-digit numbers

5. B.5 Add numbers up to two digits: word problems

6. B.6 Complete the addition sentence: up to two digits

7. B.7 Add numbers up to three digits

8. B.8 Add numbers up to three digits: word problems

9. B.9 Complete the addition sentence: up to three digits

10. B.10 Add numbers up to four digits

11. B.11 Add numbers up to four digits: word problems

12. B.12 Complete the addition sentence: up to four digits

13. B.13 Addition: fill in the missing digits

14. B.14 Properties of addition

15. B.15 Add three or more numbers

16. B.16 Addition patterns over increasing place values

17. B.17 Choose numbers with a particular sum

18. B.18 Estimate sums

19. B.19 Estimate sums: word problems

Subtraction

1. C.1 Subtraction facts up to 18

2. C.2 Subtraction facts up to 18: word problems

3. C.3 Complete the subtraction sentence: up to 18

4. C.4 Subtract numbers up to two digits

5. C.5 Subtract numbers up to two digits: word problems

6. C.6 Complete the subtraction sentence: up to two digits

7. C.7 Subtract numbers up to three digits

8. C.8 Subtract numbers up to three digits: word problems

9. C.9 Complete the subtraction sentence: up to three digits

10. C.10 Subtract numbers up to four digits

11. C.11 Subtract numbers up to four digits: word problems

12. C.12 Complete the subtraction sentence: up to four digits

13. C.13 Subtraction: fill in the missing digits

14. C.14 Subtraction patterns over increasing place values

15. C.15 Choose numbers with a particular difference

16. C.16 Estimate differences

17. C.17 Estimate differences: word problems