Every two-digit number is made of tens and ones.
You write down how many tens and how many ones the number has.
Example: The number 36 has 3 tens and 6 ones.
You write the 3 in the T box and the 6 in the O box.
The numbers you write in show the answer.
Example
36=
| Z | E |
|---|---|
| 3 | 6 |
54=
| Z | E |
|---|---|
| 5 | 4 |
78=
| Z | E |
|---|---|
| 7 | 8 |
91=
| Z | E |
|---|---|
| 9 | 1 |
For parents
What does this exercise practice?
Split a two-digit number into tens and ones.
Common pitfalls
For 40 there are 4 tens and 0 ones. The 0 belongs in the ones box and must not be left out.
How to practice at home
Build numbers with ten-rods and one-cubes, then write down the split.
Related: Digit Swap, Find the digits