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Earn +20 ptsQ: Which keys do you use to add to and subtract from a selection?
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Continue Learning about Math & Arithmetic
Do you add or subtract the data in math?
You add or subtract (or use other operators) depending on what is required.
How can you use a number line to add and subtract?
If you want to use a number line to add and subtract, it can be done with a slide rule. But it is much easier to use an electronic calculator.
When do you use LCM in math?
When you want to add or subtract unlike fractions.
What job would you have to use LCM and HCF for?
Any job where you need to add or subtract fractions.
What modern day inventoin do people use in order to add subtract multiply and divide?
abacus and a calculater
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