Idea 15of 22Builds onDividing by 1/3 is not dividing by 3Jumps of 1/4 on a number line
Count the jumps from 0 to 2
How many jumps of 1/4 go from 0 to 2?
Today you'll discover
- how a number line shows division
- how to count the jumps to a whole number
- why 2 ÷ 1/4 is 8
Think firstJumps of 1/4, from 0 to 2
A frog jumps 1/4 at a time, from 0 to 2. How many jumps does it make?
Decide first, then press Next. Count the hops, not the whole numbers.
A number line from 0 to 2, a box saying each jump is 1/4 and a flag at 2. Then marks at every quarter, labelled 1/4 to 8/4. Then eight numbered hops from 0 to 2, the last one ringed, and the sentence 2 ÷ 1/4 = 8. The last step shows jumps of 1/2 from 0 to 3.
See the whole ideathe big idea and the key word, in one place
The big idea
2 ÷ 1/4 counts the jumps of 1/4 from 0 to 2: 8 jumps.
Compare themMultiplying: the jumps are given, find where they land. Dividing: where to stop is given, count the jumps.
Key word
- jump
- one equal step along a number line, the size of the unit fraction
Ready to use it?
- Use a number line to divide a whole number by a unit fraction.