There are four moves. One more, one less, ten more, ten less.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
Across or down
Ones move you across the row. Tens move you up or down a row.
Say it before you tap
Guess the number out loud first. Then tap and check.
The chart turns arithmetic into movement
One right is one more. One down is ten more. Two moves you can make with a finger replace two calculations.
Say where you will land first
Predict, then move and check. Guessing after the fact teaches nothing; predicting first tests whether you really know.
Step 2: Try It Yourself
Say your answer out loud, then tap to check it.
Step 3: Watch an Example
One step at a time.
Watch Leo Predict
Leo is on 25 and chooses ten less.
- Step 1
He says his answer first: "15."
Step 4: Your Turn
Practice makes it stick.
Steps on the Chart
Problem 1 of 1
Ana starts at 26. She goes ten more, then one less.
is where she lands
Where Do You Land?
1 of 3
One less than 30 is?
2 of 3
Ten more than 19 is?
3 of 3
One more than 39 is?
Try Your Own Moves
Pick any number and try all four buttons.
Step 5: Quick Check
Show what you know.
Question 1 of 2
Ten less than 34 is?
Question 2 of 2
Which move goes across the row?
What You Learned
- One more and one less move across the row.
- Ten more and ten less move down and up.
- Say your answer first, then check it.