The blitz is over. Our team scored 12 points and the visitors scored 9. How far apart were the teams? Was it a close match?
Watch 12 − 9 done two ways on the number line. The long way first, then the short way. Which one needs fewer jumps?
We made three little jumps. 12 − 9 = 3. The jumps are the answer.
Close numbers sit near each other on the line, so the gap is small. Now two more close take-aways. Predict how many jumps before each one.
We already saw that 12 − 9 needs three jumps up. Now try a new one: 16 − 13. Stand on the smaller number and count up. How many jumps? The jumps are the answer.
In your maths copy, write 12 − 9 = 3.
Today we count up to solve these: 10 − 8, then 11 − 9, then 13 − 11, then 15 − 12. Stand on the smaller number and jump up one step at a time — how many jumps to the bigger one?
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