1. Before you add or subtract decimals, what must you do?

2. Steps to changing the power of 10 in SN:

3. Words that tell you to subtract:

1 answer

1. Before adding or subtracting decimals, you must make sure that the decimals have the same number of decimal places.

2. Steps to changing the power of 10 in scientific notation:
- Move the decimal point to the right if the power of 10 is positive to increase the power.
- Move the decimal point to the left if the power of 10 is negative to decrease the power.

3. Words that tell you to subtract include: minus, decrease, take away, reduce, diminish.
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