Lesson 1 of 8 · Grade 1 and 2
Ten ones make one ten
Ten ones make one ten. Snap 10 cubes into one rod.
Step 1
Learn it
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Ones are single cubes
One cube is one. Count: 1, 2, 3 up to 10.
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Ten cubes snap to a rod
When you have 10 cubes, snap them into one rod. One rod is one ten.
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Same amount
10 ones and 1 ten are the same amount. They are packed differently.
Step 2
Watch how
Two examples, worked out one step at a time.
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How many ones make 1 ten?
The rod is as long as 10 cubes. So 10 ones make 1 ten.
Answer: 10 -
How many ones make 3 tens?
Each ten is 10 ones. Three tens: 10, 20, 30.
Answer: 30
Step 3
Play with it
Add ones. Snap ten ones into one ten.
Step 4
Practice
Five questions. Think first. Then tap Show answer.
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You have 10 cubes. How many rods can you make?
Show answer
1
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How many ones are in 2 tens?
Show answer
20
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You have 9 cubes. How many more make a ten?
Show answer
1
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How many ones are in 5 tens?
Show answer
50
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20 cubes snap into how many rods?
Show answer
2