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Topic Map Topic 7 Lesson 1 = Subtracting Tens

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1 Topic Map Topic 7 Lesson 1 = Subtracting Tens
Lesson 2 = Finding Parts of 100 Lesson 3 = Subtracting on a Hundred Chart Lesson 4 = Adding On to Subtract Lesson 5 = Missing or Extra Information

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7 Focus Lesson 7.1 Why does only the tens digit change when subtracting tens from a two-digit number?

8 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…
Lesson 7.1 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…

9 Lesson 7.1 Use little ten-frames to subtract multiples of ten from a two-digit number.

10 When one part of 100 is known, how can the other part be found?
Focus Lesson 7.2 When one part of 100 is known, how can the other part be found?

11 Part Ten-Frames Subtract Mental Math Tens Ones
Lesson 7.2 Part Ten-Frames Subtract Mental Math Tens Ones

12 Lesson 7.2 Use little ten-frames to model a known part of 100 to find the missing part.

13 How can a hundred chart be used to subtract two-digit numbers?
Focus Lesson 7.3 How can a hundred chart be used to subtract two-digit numbers?

14 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…
Lesson 7.3 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…

15 Lesson 7.3 Use a hundred chart to find the difference between 2 two-digit numbers.

16 Focus Lesson 7.4 How can you add-on to find the difference between 2 two-digit numbers mentally?

17 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…
Lesson 7.4 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…

18 Use models to find the difference between 2 two-digit numbers.
Lesson 7.4 Use models to find the difference between 2 two-digit numbers.

19 Focus Lesson 7.5 How do you know if there is extra information or missing information in a problem?

20 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…
Lesson 7.5 Ten-Frames Subtract Mental Math Tens 10, 20, 30, 40… Ones 1, 2, 3, 4…

21 Identify extra information and missing information in a problem.
Lesson 7.5 Identify extra information and missing information in a problem.


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