Common core subtraction - Number line subtraction
Again common core subtraction is using addition instead. Add up from the smaller number to the bigger number.
Subtraction = Addition
Yes Really! Subtraction is addition.
Example 1
32-12
3 | ||
+ | 5 | |
+ | 10 | |
+ | 2 | |
20 |
To see this step by step
Common core subtraction - Number line subtraction step by step
Example 1
32-12
Answer: 32-12=20
Answer: 32-12=20
Example 2
243-87
3 | ||
+ | 10 | |
+ | 100 | |
+ | 43 | |
156 |
To see this step by step
Common core subtraction - Number line subtraction step by step
Example 2
243-87
Answer: 243-87=156
Answer: 243-87=156
Example 3
264-128
2 | ||
+ | 70 | |
+ | 60 | |
+ | 4 | |
136 |
To see this step by step
Common core subtraction - Number line subtraction step by step
Example 3
264-128
Answer: 264-128=136
Answer: 264-128=136
OR
100 | ||
+ | 30 | |
+ | 2 | |
+ | 4 | |
136 |
To see this step by step
Common core subtraction - Number line subtraction step by step
Example 3
264-128
Answer: 264-128=136



