Make Ten
Pop the bubble that makes 10: number bonds from 5 to 100, then decimals.
What it teaches
- Tens and ones, then hundreds and thousands
- Zero as a place holder (305, 4070)
- Tenths and hundredths
How to play
Step 1: Read the number.
Step 2: Tap + and − to put blocks in each column.
Step 3: Check it: the answer shows the number split into parts.
Levels
Start where it feels easy. Inside each level the questions get harder or easier as you play.
- Level 1 · Ages 5–6Tens and ones to 50Build teen numbers firstPlay level 1
- Level 2 · Ages 6–8To 100Build and readPlay level 2
- Level 3 · Ages 7–9HundredsWith zeros tooPlay level 3
- Level 4 · Ages 9–10ThousandsFour-digit numbersPlay level 4
- Level 5 · Ages 10–12DecimalsTenths and hundredthsPlay level 5
Try a question
Level 2
Build 15 with the blocks.
15
Show the answer
Answer: 15
15 = 10 + 5
Split it up: 15 = 10 + 5.
Level 4
What number do the blocks show?
Show the answer
Answer: 7735
7735 = 7000 + 700 + 30 + 5
Count each column: the biggest blocks first, then the smaller ones.
The strategy behind it
Each level links to a short lesson that shows the trick step by step.
Practise on paper
Printable worksheets on the same topic, with answer keys.
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Hop the frog along the number line to add and subtract, all the way to negatives and decimals.
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Find the mystery number that balances the scale, from missing numbers to equations.