Add One-Digit Numbers - Sums to 20
⚡️ Be a math ninja! It's time to practice adding single-digit numbers so fast that the answer just pops into your head.
Do this: Read the concept below, then try the quiz or activity.
Concept
When you add two single-digit numbers (like 8 + 7), the answer goes into the "teen" numbers.
🎯 Ninja Strategies: When you see a problem, pick your favorite ninja weapon: 1. The Double Trick: For 7 + 8... think "7 + 7 is 14. One more is 15!" 2. The "Make 10" Trick: For 9 + 5... think "Take 1 from the 5 to give to the 9. Now it's 10 + 4. That's 14!" 3. The Count On Trick: For 8 + 3... think "Grab 8... 9, 10, 11."
You don't have to use fingers. Your brain is much faster!
Try it
Choose your ninja trick!
Instructions: Solve the problems using fact tricks in your head.
Problem 1: 9 + 7 = ? * (Try the "Make 10" trick!) * Answer: ___
Problem 2: 6 + 8 = ? * (Try the "Double" trick! Double 6 plus two, or Double 8 minus two!) * Answer: ___
Problem 3: 5 + 9 = ? * (Magic 9 trick! Take 1 from the 5... it's a fourteen!) * Answer: ___
Problem 4: 7 + 5 = ? * Answer: ___