Question

5. Use the subtraction rule to turn each subtraction statement into an addition statement. Do not solve.

a. -2/3 - 1/2

b. -3.5 - 6.7

c. -7/10 - (-2/3)

Answer 1

When subtracting off a positive, it's the same as adding a negative.

For example, 20-7 = 20 + (-7) = 13

When we subtract a negative, the negative signs cancel out to make a positive.

Example: 2 - (-4) = 2 + 4 = 6

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Here are the answers

a. -2/3 + (-1/2)

b. -3.5 + (-6.7)

c. -7/10 + 2/3