Imagine you have a special power to group numbers into teams of 10. This makes adding and subtracting super easy!
Example: Let's add 8 + 7 + 2
Step 1: 8 and 2 are best friends (they make 10 together)
Step 2: Now we have 10 + 7
Step 3: That's easy! It's 17!
You've just used your "Make 10" superpower to solve a tricky problem!
Imagine you're on a number line adventure. To add small numbers, start at the bigger number and hop forward!
Example: Let's add 5 + 3
Start at 5, then hop forward: "6, 7, 8"
You've reached 8! That's your answer!
This trick works great for adding any number less than 5. You're like a number line explorer!
The plus sign (+) we use today is like a young superhero. It only started being used about 500 years ago! Before that, people would write out "plus" or use totally different symbols. Imagine writing "five plus three" instead of "5 + 3" every time!
Can you add all the numbers from 1 to 10 in your head? Try to do it in less than 10 seconds!
(Psst... the secret answer is 55. How fast can you get there?)
You've mastered 10 questions! Your brain must be growing bigger and stronger!