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Subtraction Practice: Don't Cross 10.pdf

15.1.2021-answers.pdf
Preview of Subtraction Practice: Don't Cross 10
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Summary

Summary

This exercise focuses on subtracting numbers up to 20, without borrowing (crossing 10).

Key Concepts:

Cross out counters: Visualize subtraction by using objects or counters to represent the numbers. Cross out or remove the smaller number from the larger one.
 Consecutive Numbers: Notice patterns in subtractions involving consecutive numbers (e.g., 17 - 5 = 12, 19 - 7 = 12). This helps identify missing values.

Examples:

a) 15 - 4 = 11 (Cross out 4 from 15, leaving 11)
b) 17 - 5 = 12 (Remove 5 from 17, resulting in 12)
c) 20 - 3 = 17 (Take away 3 from 20, yielding 17)

Exercise:

Complete the following subtractions without borrowing:
 13 - 2 = ?
14 - 3 = ?
16 - 5 = ?
Fill in the missing numbers in the following equations based on patterns observed:
 17 - ? = 11
* 19 - ? = 11

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Description

Solve subtraction problems without crossing 10, using counters for visual aid. Teddy initially has an unknown number of cones, gives 3 to Eva, and the remaining amount is calculated.

Technical Information

  • File Format: PDF
  • File Size: 1.96 MB
  • Pages: 2
  • Language: EN
  • Total Downloads: 110
  • Last Updated: 1 week ago

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