Adding Adding by Partitioning Vertically 156 232 300

Adding

Adding by Partitioning Vertically 156 + 232 300 80 8 388 1 0 0 + 200 50+30 6+2

+ Partitioning Vertically Formal Written Method 2378 2 3 7 8 1149 + 1 1 4 9 3000 3 5 2 7 400 110 17 3527 1 1

+ Partitioning Vertically Formal Written Method 4578 4 5 7 8 2349 + 2 3 4 9 6000 6 9 2 7 800 110 17 6927 1 1

+ Partitioning Vertically Formal Written Method 4687 4 6 8 7 5749 + 5 7 4 9 9000 1 0 4 3 6 1300 1 120 16 10436

Subtracting

Subtraction by adding on. 502 - 198 = 304 +2 198 +300 200 502 - 198 +2 502 2 (to 200) 300 (to 500) 2 (to 502) 304

Subtraction by adding on. 613 - 279 = 334 +1 279 +20 280 +300 +13 300 613 613 - 279 1 20 300 13 334 (to 280) (to 300) (to 613)

Subtraction by adding on. 846 - 458 = 388 +42 +300 458 500 846 - 458 +46 800 846 42 300 46 388 (to 500) (to 846)

Subtraction by adding on. 2645 - 898= 1746 +2 898 +1000 900 1000 +645 2000 2645 - 898 2 1000 645 1746 (to 900) (to 1000) (to 2645)

Subtraction by adding on. 3567 - 742= 2825 +58 +2000 742 800 1000 +567 3000 3567 - 742 58 2000 567 2825 (to 800) (to 1000) (to 3567)

Subtraction by adding on. 3879 - 1352 = 2525 +48 +600 +1000 1352 1400 2000 +879 3000 3879 - 1352 48 600 1000 879 2525 1 11 (to 1400) (to 2000) (to 3879)

Subtraction by adding on. 6457 - 2469 = 3988 +31 +500 +3000 2469 2500 3000 +457 6000 6457 - 2469 31 500 3000 457 3988 (to 2500) (to 3000) (to 6457)

Subtraction by adding on. 5021 - 1989 +10 1990 2000 +1000 3000 Th 3000 = 3032 +1000 4000 H T 30 +20 5000 U 2 +1 5020 5021

Subtraction by adding on vertically 6008 - 2997 3 (3000) 3000 (6000) 8 (6008) 3011

Subtraction by adding on vertically 5003 - 1989 11 (2000) 3000 (5000) 3 (6008) 3014

5 2 3 9 -1 5 6 7 3 3 0 (1570) 4 0 0 3 2 3 9 (2000) (5239) 3 6 5 3 1 (1600)

4 11 1 5 2 3 9 -1 5 6 7 3 6 7 2

Adding Decimals

Formal Written Method Partitioning Vertically 65. 4 + 39. 3. 7 14. 0 90. 0 104. 7 + 65. 4 39. 3 10 4. 7 1

Formal Written Method Partitioning Vertically 28. 7 + 39. 3 1. 0 + 28. 7 39. 3 17. 0 5 8. 0 50. 0 1 1 68. 0

Formal Written Method Partitioning Vertically 28. 7 + 47. 8 1. 5 + 28. 7 47. 8 15. 0 7 6. 5 60. 0 1 1 76. 5

Formal Written Method Partitioning Vertically 28. 7 + 47. 8 53. 6 2. 1 18. 0 110. 0 1 3 0. 1 1 + 28. 7 47. 8 53. 6 13 0. 1 2 2

Adding by Partitioning Vertically 3. 12 + 2. 32. 04. 40 5. 00 5. 44

Formal Written Method Partitioning Vertically 5. 91 + 1. 86. 07 + 5. 91 1. 86 1. 70 7. 7 7 6. 00 1 7. 77

Partitioning Vertically Formal Written Method 3. 89 + 4. 37 2. 56. 22 1. 60 9. 00 10. 82 + 3. 89 4. 37 2. 56 10. 8 2 12

Subtracting Decimals

Decimals 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 0. 9 1. 0

Subtraction by adding on. 24. 3 - 7. 9 = 16. 4 +0. 1 7. 9 +2. 0 8. 0 +10. 0 +4. 3 10. 0 24. 3 - 7. 9 0. 1 2. 0 10. 0 4. 3 16. 4 (to 8. 0) (to 10. 0) (to 24. 3)

Subtraction by adding on. 36. 8 - 8. 7 = 28. 1 +0. 3 8. 7 +1. 0 9. 0 +20. 0 +6. 8 10. 0 36. 8 - 8. 7 0. 3 1. 0 20. 0 6. 8 28. 1 1 (to 9. 0) (to 10. 0) (to 36. 8)

Subtraction by adding on. 42. 8 - 19. 3 = 23. 5 +0. 7 +10. 0 +2. 8 19. 3 20. 0 30. 0 42. 8 - 19. 3 0. 7 10. 0 2. 8 23. 5 1 (to 20. 0) (to 30. 0) (to 42. 8)

Subtraction by adding on. 56. 9 - 23. 6 = 33. 3 +0. 4 23. 6 +6. 0 24. 0 +20. 0 +6. 9 30. 0 56. 9 - 23. 6 0. 4 6. 0 20. 0 6. 9 33. 3 11 (to 24. 0) (to 30. 0) (to 56. 9)

Decimals 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 0. 9 1. 0

Subtraction by adding on. £ 7. 85 - £ 3. 49 +0. 51 3. 49 +3. 0 4. 0 = £ 4. 36 +0. 85 7. 0 7. 85 £ 7. 85 - £ 3. 49 0. 51 3. 00 0. 85 £ 4. 3 6 1 (to £ 4. 00) (to £ 7. 85)

Subtraction by adding on. £ 9. 63 - £ 5. 28 +0. 72 5. 28 +3. 0 6. 0 = £ 4. 35 +0. 63 9. 0 9. 63 £ 9. 63 - £ 5. 28 0. 72 3. 00 0. 63 £ 4. 3 5 1 (to £ 6. 00) (to £ 9. 63)

Subtraction by adding on. £ 12. 51 - £ 7. 83 = £ 4. 68 +0. 17 7. 83 +4. 0 8. 0 +0. 51 12. 0 12. 51 £ 12. 51 - £ 7. 83 0. 17 4. 00 0. 51 £ 4. 6 8 (to £ 8. 00) (to £ 12. 51)

Subtraction by adding on. £ 23. 94 - £ 17. 62 = £ 6. 32 +0. 38 17. 62 +2. 0 18. 0 +3. 0 +0. 94 20. 0 23. 94 £ 23. 94 - £ 17. 62 0. 38 2. 00 3. 00 0. 94 £ 6. 3 2 11 (to £ 18. 0) (to £ 20. 0) (to £ 23. 94)

Subtraction by adding on. £ 35. 12 - £ 27. 59 = £ 7. 53 +0. 41 27. 59 +2. 0 28. 0 +5. 0 +0. 12 30. 0 35. 0 23. 94 £ 35. 12 - £ 27. 59 0. 41 2. 00 5. 00 0. 12 £ 7. 5 3 (to £ 28. 00) (to £ 30. 00) (to £ 35. 12)