Counting and number puzzles
Strategy card
Counting helps you see what changed.
- Step 1: Touch each dot and count.
- Step 2: Count the next group.
- Step 3: Did it get more or less? How many more?
- Step 4: Pick the group that changes the same way.
Tip: Touch each thing once as you count so you don't miss one.
Worked example
Find the rule. Which number goes with the last one?
12 → 19
4 → ?
- A: 13
- B: 10
- C: 9
- D: 11 (the answer)
Why: The rule is: add 7. 12 → 19. So 4 → 11.
Your turn
Your turn 1 of 3
Use every number and every sign once. Which answer can you make?
Numbers and signs: 1 9 +
Your turn 2 of 3
Which number comes next?
16, 15, 14, 13, ?
Your turn 3 of 3
Find the rule. Which number goes with the last one?
18 → 20
9 → ?
Keep practicing
Grown-ups: Count stairs, grapes or cars together. Parent guide
Next lesson: Number patterns