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IM: 7.5.6: Subtracting Rational Numbers (Lesson)

By Formative Staff
Last updated 24 days ago
10 Questions
6.1: Number Talk: Missing Addend
Solve each equation. Then, rewrite each addition equation as a subtraction equation.

247+c=458

c+43.87=58.92

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

6.2: Expressions with Altitude

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.

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

Can you find another way to solve this puzzle?

6.3: Does the Order Matter?
Find the value of each subtraction expression.

For Column A

For Column B

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

What do you notice about their values?