Number Representation and Formation 21 to 30 (teacher made) - Free Printable

Let’s solve this step by step.

We are matching numbers from 21 to 30 with their correct ten-frame pictures.

A ten-frame is a box with 10 spaces (usually arranged in 2 rows of 5). When we use two ten-frames together, they can show numbers up to 20. But here, since we’re going up to 30, each picture uses three ten-frames — because 3 × 10 = 30.

Each full ten-frame means 10 dots. So:

- If all three ten-frames are full → that’s 30.
- If two are full and one has 1 dot → that’s 21.
- If two are full and one has 2 dots → that’s 22.
- And so on…

Now let’s look at the ten-frame pictures on the right side (from top to bottom):

Top row (left to right):
1. Two full ten-frames + one with 1 blue dot → 10 + 10 + 1 = 21
2. Two full ten-frames + one with 2 purple dots → 10 + 10 + 2 = 22
3. Two full ten-frames + one with 3 purple dots → 10 + 10 + 3 = 23
4. Two full ten-frames + one with 4 orange dots → 10 + 10 + 4 = 24
5. Two full ten-frames + one with 5 orange dots → 10 + 10 + 5 = 25

Bottom row (left to right):
6. Two full ten-frames + one with 6 teal dots → 10 + 10 + 6 = 26
7. Two full ten-frames + one with 7 red dots → 10 + 10 + 7 = 27
8. Two full ten-frames + one with 8 pink dots → 10 + 10 + 8 = 28
9. Two full ten-frames + one with 9 yellow dots → 10 + 10 + 9 = 29
10. Three full ten-frames (all yellow) → 10 + 10 + 10 = 30

So now we match them:

→ 21 matches the first picture (blue, 1 dot in third frame)
→ 22 matches the second picture (purple, 2 dots)
→ 23 matches the third picture (purple, 3 dots)
→ 24 matches the fourth picture (orange, 4 dots)
→ 25 matches the fifth picture (orange, 5 dots)
→ 26 matches the sixth picture (teal, 6 dots)
→ 27 matches the seventh picture (red, 7 dots)
→ 28 matches the eighth picture (pink, 8 dots)
→ 29 matches the ninth picture (yellow, 9 dots)
→ 30 matches the tenth picture (all yellow, 3 full frames)

You would draw or paste each picture under its matching number.

Final Answer:
Match each number 21–30 with the ten-frame picture that shows that many dots:
21 → 2 full + 1 dot
22 → 2 full + 2 dots
23 → 2 full + 3 dots
24 → 2 full + 4 dots
25 → 2 full + 5 dots
26 → 2 full + 6 dots
27 → 2 full + 7 dots
28 → 2 full + 8 dots
29 → 2 full + 9 dots
30 → 3 full frames