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IM: 7.5.6: Subtracting Rational Numbers (Lesson)

Last updated over 1 year ago

10 Nsɛmmisa

6.1: Number Talk: Missing Addend

Solve each equation. Then, rewrite each addition equation as a subtraction equation.

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1.

247+c=458

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6.2: Expressions with Altitude

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6.3: Does the Order Matter?

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2.

c+43.87=58.92

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3.

\frac{15}{8}+c=\frac{51}{8}

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4.

A mountaineer is changing elevations. Write an expression that represents the difference between the final elevation and beginning elevation. Then write the value of the change. The first one is done for you.

Refer to the puzzle.

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5.

Fill in the table so that every row and every column sums to 0.

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6.

Can you find another way to solve this puzzle?

Find the value of each subtraction expression.

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7.

For Column A

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8.

For Column B

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9.

What do you notice about the expressions in Column A compared to Column B?

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10.

What do you notice about their values?