Know your facts so fast they pop into your head before you finish blinking!
FLUENCY means you can add and subtract numbers within 20 quickly and accurately â without needing to count on your fingers every time. Knowing these facts by heart frees your brain to tackle much harder problems!
The doubles facts to 20:
Doubles are the easiest to remember â same number twice!
If 6 + 6 = 12 (double!), then 6 + 7 = 13 (one more than the double). If 8 + 8 = 16, then 8 + 9 = 17 (one more). Use doubles you know to find near-doubles!
Add 8 + 5: â Break 5 into 2 + 3 â 8 + 2 = 10 (a full ten!) â 10 + 3 = 13 8 + 5 = 13. Making 10 first makes it easier!
What is 9 + 6? (Hint: try making a ten first!)
Remember This!
Practice 5 facts every day! Use flash cards, play games, or quiz a family member. Repetition is the key to fluency â the more you practice, the faster you get!