Subtracting 7
Lucky number 7! By now, you know several tricks. Let's use our combo tricks to take away 7 with ease.
Do this: Read the concept below, then try the quiz or activity.
Concept
Subtracting 7 can be done by counting on, using 10, or breaking 7 apart!
🎯 The "Break Apart" Strategy: Example: 15 - 7 = ? 1. Break the 7: Let's break 7 into a 5 and a 2. 2. Subtract the 5 first: 15 - 5 = 10. (Easy!) 3. Subtract the 2: 10 - 2 = 8. So, 15 - 7 = 8.
🎯 Using the "Count On past 10" trick: From 7 to 10 is 3 steps. From 10 to 15 is 5 steps. 3 steps + 5 steps = 8. Same answer! Use the strategy your brain likes best.
Try it
Let's conquer number 7!
Instructions: Use your favorite mental strategy to solve these problems.
Problem 1: 14 - 7 = ? * (Hey, wait! Is this a double? Yes! 7+7=14) * Answer: ___
Problem 2: 12 - 7 = ? * (Try breaking 7 into 2 and 5! 12 - 2 = 10. 10 - 5 = ?) * Answer: ___
Problem 3: 16 - 7 = ? * (Try counting up! Steps from 7 to 10 is 3. Steps from 10 to 16 is 6. 3+6=?) * Answer: ___
Problem 4: 10 - 7 = ? * Answer: ___