Maths playground · 26/50 · Ages 8–10

The number backpack

Free · No ads · No behavioral tracking. No account needed; progress stays in this browser. Privacy for families

Rabbit packs sticks in bundles of ten. Three bundles and four loose sticks make thirty-four. Place value explains what each digit represents.

What you will discover

English vocabulary

tens
chục
ones
đơn vị

Let’s play

3 tens + 4 ones = which number?

See the explanation

Three tens are 30. Add four ones to get 34.

Practise touch typing

Place your hands on F and J and type this sentence using ten fingers.

Three tens and four ones make thirty four.

Two little quiz questions

1. In 52, the 5 represents…

  • 5 ones
  • 5 tens
  • 5 hundreds
Answer and explanation

5 tens. Five tens are fifty.

2. Which number has 4 tens and 3 ones?

  • 34
  • 43
  • 403
Answer and explanation

43. Forty plus three is forty-three.