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Topic 9

Topic Map. Topic 9. Lesson 1 = Regrouping 1 Ten for 10 Ones Lesson 2 = Models to Subtract Two- and One-Digit Numbers Lesson 3 = Subtracting Two- and One-Digit Numbers Lesson 4 = Models to Subtract Two-Digit Numbers Lesson 5 = Subtracting Two-Digit Numbers

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Topic 9

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  1. Topic Map Topic 9 Lesson 1 = Regrouping 1 Ten for 10 Ones Lesson 2 = Models to Subtract Two- and One-Digit Numbers Lesson 3 = Subtracting Two- and One-Digit Numbers Lesson 4= Models to Subtract Two-Digit Numbers Lesson 5 = Subtracting Two-Digit Numbers Lesson 6= Using Addition to Check Subtraction

  2. FocusLesson 9-1 How do you know when you need to regroup when subtracting?

  3. Lesson 9.1 Subtract: when you subtract you find out how many are left or which group has more Difference: the answer in subtraction is called the difference Regroup: 10 ones can be regrouped to make 1 ten

  4. Lesson 9.1 1 ten can be regrouped for 10 ones

  5. FocusLesson 9.2 When subtracting, how do you know when you need to regroup?

  6. Lesson 9.2 Minus Sign: is the symbol for subtraction Digit: has one or more digits Regroup: 10 ones can be regrouped to make 1 ten

  7. Lesson 9.2 Use models to subtract a one-digit number from a two-digit number with or without regrouping.

  8. FocusLesson 9.3 How do you use paper and pencil to subtract a one-digit number from two-digit number?

  9. Lesson 9.3 Subtract: when you subtract you find out how many are left or which group has more Difference: the answer in subtraction is called the difference Regroup: 10 ones can be regrouped to make 1 ten

  10. Lesson 9.3 9-3: Subtract a one-digit number from a two-digit number with or without regrouping

  11. FocusLesson 5.4 How can you model subtraction of a two-digit number from a two-digit number with and without regrouping?

  12. Lesson 9.4 Minus Sign: is the symbol for subtraction Digit: has one or more digits Regroup: 10 ones can be regrouped to make 1 ten

  13. Lesson 9.4 Use models to subtract two-digit numbers with and without regrouping.

  14. FocusLesson 9.5 How can you subtract a two-digit number from another two-digit number using paper and pencil?

  15. Lesson 9.5 Minus Sign: is the symbol for subtraction Digit: has one or more digits Regroup: 10 ones can be regrouped to make 1 ten

  16. Lesson 9.5 Use paper and pencil to subtract two-digit numbers from other two-digit numbers, with and without regrouping.

  17. FocusLesson 9.6 How can you use addition to check subtraction?

  18. Lesson 9.4 Minus Sign: is the symbol for subtraction Digit: has one or more digits Regroup: 10 ones can be regrouped to make 1 ten

  19. Lesson 9.6 Subtract two-digit numbers and check their answers by writing the related addition problems.

  20. FocusLesson 9.7 How can answering one question at a time help solve two- question problems?

  21. Lesson 9.7 Subtract: when you subtract you find out how many are left or which group has more Difference: the answer in subtraction is called the difference Regroup: 10 ones can be regrouped to make 1 ten

  22. Lesson 9.7 Solve two-question problems by first answering one question and then using that result to answers a second question.

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