A ten is worth more than a one. So look at the tens first.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
More tens wins
31 has 3 tens. 28 has 2 tens. So 31 is greater, even though 8 is more than 1.
When the tens tie
If both have 2 tens, look at the ones. 27 is greater than 24.
Why tens decide first
One ten outweighs nine ones. So if the tens differ, the ones cannot rescue the smaller number.
Only if the tens tie
When both have the same tens, the ones settle it. That is the only time the ones matter.
Step 2: Try It Yourself
Tap and try it out.
Ana
Leo
31 is greater than 28.
Step 3: Watch an Example
One step at a time.
Watch Ana Compare
Ana compares 31 and 28.
- Step 1
She counts the rods: 3 rods and 2 rods.
Step 4: Your Turn
Practice makes it stick.
Marbles
Problem 1 of 1
Leo has 24 marbles. Ana has 19. Who has more?
Name the Greater Number
Type the number that is greater.
1 of 3
Which is greater, 32 or 29?
2 of 3
Which is greater, 26 or 23?
3 of 3
Which is greater, 18 or 21?
Step 5: Quick Check
Show what you know.
Question 1 of 2
Which is greater, 30 or 27?
Question 2 of 2
What do you look at first?
What You Learned
- Compare the tens first.
- More tens means the greater number.
- If the tens tie, compare the ones.