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Teaching notes

How to use this worksheet

This worksheet uses the Math Worksheets theme to make basic operations math practice concrete, visual and easy to introduce.

  • Addition and Subtraction
  • Calculation
  • Number Sense
  • Attention

How to do it

Read the direction aloud and do the first item together. Solve 20 vertically stacked Subtraction problems using operands up to 20.

Easier or harder

Easier: Reduce the number range and let the child point to the answer before writing it.

Challenge: Ask the child to represent one answer in a second way and explain which strategy was faster.

What you need

  • Printed worksheet
  • Pencil and eraser
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Teacher and parent guidance

Ask the child to show how the answer was found with fingers, counters or pictures before recording it.

Age and difficulty

This version suits Kindergarten, Grade 1 learners. Increase or reduce adult prompts to match confidence, language and attention span.

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