Unit 6, Lesson 9
Dealing with Negative Numbers
Grade 7
Practice
Problem 1
Solve each equation.
\(4a=\text-28\)
\(b-\text-6=\text-2\)
\(\text-c+4=\text-9\)
\(\text-3d+7=1\)
\(25e+\text-11=\text-86\)
to access Practice Problem Solutions.
Problem 2
Here is an equation \(2x+9=\text-15\). Write three different equations that have the same solution as \(2x+9=\text-15\). Explain or show your reasoning.
to access Practice Problem Solutions.
Select all the equations that represent the diagram.
\(x+5=18\)
\(18\div3=x+5\)
There are 88 seats in a theater. The seating in the theater is split into 4 identical sections. Each section has 14 red seats and some blue seats.
- Draw a tape diagram to represent the situation.
- What unknown amounts can be found by using the diagram or reasoning about the situation?
to access Practice Problem Solutions.
Match each story to an equation.
A stack of nested paper cups is 8 inches tall. The first cup in the stack is 4 inches tall, and each of the other cups in the stack adds \(\frac14\) inch to the height of the stack.
A baker uses 4 cups of flour. She uses \(\frac14\) cup to flour the counters and the rest to make 8 identical muffins.