How it works
A rod is ten. A cube is one.
Ten ones make one ten.
Count the tens first, then the ones: 6 tens and 9 ones is 69.
Worked examples
Read the blocks
- You see 1 rod and 5 cubes.
- 1 ten and 5 ones.
- The blocks show 15.
Split a number
- 90 has how many tens and ones?
- 9 tens and 0 ones.
- 90 is 9 tens and 0 ones.
Two digits
- You see 6 rods and 9 cubes.
- Tens first: 60. Then the ones: 9.
- 60 + 9 = 69.
A taste of the worksheet
These are the first problems of set A. The printable sheet has many more, with an answer key.
- What number do the blocks show? ___
- How many tens and ones are there?
- A rod is 1 ten. How many do these rods show? ___
- Which blocks show 37?
- 29 is 2 tens and ___ ones.
Words to know
- ten
- A group of 10, like a rod.
- one
- A single cube.
Watch out for
- The first digit is the tens and the second digit is the ones.