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Subtraction Across Zeroes

Join Jamie Unverzagt in a fun math lesson teaching how to subtract across zeroes. Learn the concept through modeling and engaging examples. Understand the basic principles of trading tens for ones and vice versa, making subtraction easy and enjoyable for young learners.

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Subtraction Across Zeroes

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

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

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

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

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

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