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Subtraction Across Zeroes

39. 13. 19. 10. 403 - 25. 200 - 99. Subtraction Across Zeroes. Hundreds Tens Ones. Let ’ s model 102 minus 38 . Begin by showing 102. 102. - 38. Hundreds Tens Ones. If you have 2 ones , can you take away 8 ones ?. 10 2. - 3 8.

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Subtraction Across Zeroes

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  1. 39 13 19 10 403 - 25 200 - 99 Subtraction Across Zeroes

  2. Hundreds Tens Ones Let’s model 102 minus 38. Begin by showing 102. 102 - 38

  3. Hundreds Tens Ones If you have 2 ones, can you take away8 ones? 102 - 38

  4. Hundreds Tens Ones How can you get more ones? There are no tens to trade! 102 - 38

  5. Hundreds Tens Ones How many tens are in ahundred? 102 - 38

  6. Hundreds Tens Ones Good thinking! 102 1 Hundred is the same as 10 tens! - 38

  7. Hundreds Tens Ones 102 Now can you get more ones? - 38

  8. Hundreds Tens Ones 9 12 102 How many tens and ones now? - 38

  9. Hundreds Tens Ones 9 12 What’s the next step? 102 - 38 How many ones are left? 4

  10. Hundreds Tens Ones 9 12 What’s the next step? 102 - 38 How many tens are left? 6 4

  11. Hundreds Tens Ones Let’s model 203 minus 57. Begin by showing 203. 203 - 57

  12. Hundreds Tens Ones If you have 3 ones, can you take7 onesaway? 203 - 57

  13. Hundreds Tens Ones 10 tens + 10 tens = 20 tens If 10 tens are in one hundred, how many tens are in two hundreds? 203 - 57

  14. Hundreds Tens Ones 20 tens- 1 ten = 19 tens Can you trade one of the 20 tens for ones? How many tens are left? 203 - 57

  15. Hundreds Tens Ones 19 tens 19 That’s 19 tens left 203 which is the same as 1 hundred and 9 tens. - 57

  16. Hundreds Tens Ones 19 13 How many ones do you have now? 203 - 57

  17. Hundreds Tens Ones 19 13 What is 13 ones minus 7 ones? 203 - 57 6

  18. Hundreds Tens Ones 19 13 Finish subtracting. 203 You’ve Got It! - 57 1 4 6

  19. 39 10 400 Subtract Across Zeroes - 9 3 9 1

  20. 49 12 502 Subtract Across Zeroes - 14 4 8 8

  21. 5 10 Don’t regroup if you don’t have to! 608 Subtract Across Zeroes Slow Down! - 234 3 7 4

  22. 69 12 702 Subtract Across Zeroes - 213 4 8 9

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