When you count up, the answer is how many hops you made.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
Careful here
You land on 9, but that is not the answer. The answer is how many hops it took.
Marker
Why counting up is subtraction
The difference is the gap between the part and the whole. Hopping across that gap measures it, so you never take anything away.
When to use it
When the two numbers are close. For 9 − 7 counting up is two hops. Taking away would be seven.
Step 2: Try It Yourself
Tap and try it out.
Step 3: Watch an Example
One step at a time.
Watch Leo Count Up
Leo works out 9 − 6.
- Step 1
He puts the marker on 6, the part he has.
Step 4: Your Turn
Practice makes it stick.
Climbing Stairs
Problem 1 of 1
Mia is on step 4. The top is step 10. How many more steps must she climb?
Count the Hops
Start at the smaller number and hop up.
1 of 2
8 − 5 = ?
2 of 2
10 − 7 = ?
Step 5: Quick Check
Show what you know.
Question 1 of 2
9 − 7 = ?
Question 2 of 2
7 − 4 = ?
What You Learned
- You can subtract by counting up.
- Start at the part and hop to the whole.
- The answer is the number of hops.