This task is about showing how to solve addition & subtraction problems using a number line.
For the questions below show how to solve the equations on the number line.
| a) |
Use the number line below to show how to solve the equation: 78 +  = 123 |
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| b) |
Use the number line below to show how to solve the equation: 209 + = 604 |
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| c) |
Use the number line below to show how to solve the equation: 230 - = 125 |
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| d) |
Use the number line below to show how to solve the equation: 375 - = 198 |
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