SME
Grade 3 Math · Problem type
Use number lines to divide
Use this for equal jumps on a number line: “How many jumps of 5 to get to 30?”
Diagram
0, 4, 8, 12, 16, 20
Size of each jump: 4
Jumps: 5
End number: 20
This is an example. Type your own values to start a new problem.
End number
÷
Size of each jump
=
Jumps
Formulas
5 × 4 = 20
Jumps × size of each jump = end number
Assumptions
•
Every jump is the same size, and the jumps start at 0.
•
Jumps × size of each jump = end number.
•
To divide, count how many jumps it takes to reach the number.
Step-by-step
WE KNOW
End number: 20
Size of each jump: 4
FIND
jumps
Step 1 · Find jumps
? × 4 = 20
Jumps × size of each jump = end number
Divide the end number by the size of each jump.
Jumps = 20 ÷ 4
Think: ? × 4 = 20
10 × 4 = 40. Five groups are half of that: 20
Jumps = 5
Check
Put the numbers back in. Both sides should match.
5 × 4 = 20 ✓
Topic check
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