You started the year seeing dots. Now you add numbers past 100.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
What you can do now
Partners to ten. Make ten. Take from ten. Tens and ones.
Facts stay easy if you keep using them. This lesson mixes them all.
The year was one idea, not ten
Bonds became facts, facts became ten-making, ten-making became column addition. Each chapter reused the one before.
What fluency buys you
When small sums cost no effort, your attention is free for the actual problem. That is why the practice was worth it.
Step 2: Try It Yourself
Tap any square to see every pair that makes that total.
| + | 0 | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| 0 | ||||||
| 1 | ||||||
| 2 | ||||||
| 3 | ||||||
| 4 | ||||||
| 5 |
Tap any square to see its number sentence.
Step 3: Watch an Example
One step at a time.
Watch Leo Choose a Strategy
Leo is asked for 8 + 6.
- Step 1
He does not count on his fingers.
Step 4: Your Turn
Practice makes it stick.
The Whole Year
Problem 1 of 2
9 red apples and 7 green ones. How many in all?
apples
Sharing Out
Problem 2 of 2
15 stickers. Ana takes 8. How many are left?
stickers
Facts Within 20
Use a strategy. Do not count one by one.
1 of 4
7 + 3 = ?
2 of 4
9 + 6 = ?
3 of 4
13 − 8 = ?
4 of 4
6 + 6 = ?
Tens and Ones
1 of 3
How many tens are in 58?
2 of 3
Ten more than 76 is?
3 of 3
43 + 25 = ?
Step 5: Quick Check
Show what you know.
Question 1 of 2
8 + 5 = ?
Question 2 of 2
14 − 9 = ?
What You Learned
- You can see numbers without counting them.
- You can make ten and take from ten.
- You can build and compare numbers to 120.
- That is a whole year of maths.