You may see this:
Other Examples:
- Asked, "What's 37 - 18?," says, "I take 1 ten off the 3 tens; that's 2 tens. I take 7 off the 7. That's 2 tens and zero...20. I have one more to take off. That's 19."
- Asked, "Whats 28 + 35?," thinks, 30 + 35 would be 65. But it's 28, so it's 2 less: 63."
Help your student become a(n) Multidigit +/- (Adding/Subtracting)
These activities challenge children to solve multidigit addition and subtraction problems. Use of algorithms is one goal, but so is flexible use of strategies and relational thinking (e.g., "99 + 99? That's like 200 and then take away 2--198").
