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Subtraction Across Zeroes By Jamie Unverzagt 403 - 25 200 - 99 39191310.

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Presentation on theme: "Subtraction Across Zeroes By Jamie Unverzagt 403 - 25 200 - 99 39191310."— Presentation transcript:

1 Subtraction Across Zeroes By Jamie Unverzagt

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

3 Hundreds Tens Ones If you have 2 ones, can you take away 8 ones?

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

5 Hundreds Tens Ones How many tens are in a hundred?

6 Hundreds Tens Ones Hundred is the same as 10 tens! Good thinking!

7 Hundreds Tens Ones Now can you get more ones?

8 Hundreds Tens Ones How many tens and ones now? 912

9 Hundreds Tens Ones What’s the next step? How many ones are left?

10 Hundreds Tens Ones What’s the next step? How many tens are left? 6

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

12 Hundreds Tens Ones If you have 3 ones, can you take 7 ones away?

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

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

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

16 Hundreds Tens Ones How many ones do you have now? 1913

17 Hundreds Tens Ones What is 13 ones minus 7 ones?

18 Hundreds Tens Ones Finish subtracting You’ve Got It!

19 Subtract Across Zeroes

20 Subtract Across Zeroes

21 Subtract Across Zeroes Slow Down! Don’t regroup if you don’t have to!

22 Subtract Across Zeroes


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