BrightPath
Count Up to Find the Difference
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Date:
Today I am practising: using distance between numbers to solve subtraction
1
For 17 − 14, count up from 14 to 17. Write each count and the difference.
2
Solve 12 − 9 by counting up. How many counts reach 12?
3
For 20 − 18, decide whether counting up or counting back takes fewer steps. Show the shorter route.
4
A child says 16 − 13 = 4 because the numbers 13, 14, 15, 16 are four numbers. Explain the number of steps.
5
Find 15 − 11 and check with 11 + ___ = 15.
6
Write a subtraction with a difference of 2. Prove it by counting up.
- Use finger movements to count the intervals between numbers.
- Contrast the starting number with the first step after it.
- Invite the learner to select this method when the numbers are close.