You may see this:
Other Examples:
- When asked, "What's 37 - 18?," the child 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."
- When asked, "What's 28 + 35?" a child thinks, 30 + 35 would be 65. But it's 28, so it's 2 less: 63."
Help your student become a(n) Multidigit +/- (Composing Numbers)
Activities continue to challenge children to fluently and flexibly add and subtract multidigit numbers mentally or using written numbers or other inscriptions (e.g., empty number line).
