Practice Adding and Subtracting 1 or 10
Goal:
Goal:
Can you add and subtract 1 or 10?
Now it’s your turn! Look at each addition and subtraction problem. Use the hundred chart to help you add and subtract 1 or 10!
52 + 10
- 42
- 62
- 53
Incorrect. Look closely at the symbol. We are adding instead of subtracting! Start at 52, and move straight down one row.
Correct!
Incorrect. Look closely at the addition problem. Instead of adding 1, we are adding 10! Try again!
87 - 10
- 77
- 97
- 86
Correct!
Incorrect. Instead of adding 10, we need to subtract 10! Move straight up one row from 87 to find the answer.
Incorrect. Instead of subtracting 1, we are subtracting 10! Move straight up one row to find your answer.
38 + 1
- 37
- 48
- 39
Incorrect. Rather than subtracting 1, we are adding 1. Move to the right one box to find the answer!
Incorrect. Rather than adding 10, we need to add 1. Move to the right one box to find the answer!
Correct!
73 - 1
- 74
- 72
- 63
Incorrect. Instead of adding 1, we need to subtract 1. Move to the left one box to find the answer.
Correct!
Incorrect. Instead of subtracting 10, we need to subtract 1. Move to the left one box to find the answer.
67 + 10
- 77
- 68
- 57
Correct!
Incorrect. Instead of adding 1, we need to add 10. Move straight down the hundred chart one row to find the answer.
Incorrect. Look closely at the symbol. Instead of subtracting, we are adding! Move straight down one row to find the answer.
Summary
Questions answered correctly:
Questions answered incorrectly: