Back to Exercise: Inequalities and Solution Sets

Exercises: Inequalities and Solution Sets

Solve each inequality and state the solution set. Flip the inequality sign only when multiplying or dividing by a negative number.

Grade 7·17 problems·~26 min·Uganda NCDC Primary 7 Mathematics·lesson·algebra-04
Printable layout
A

Recall / Warm-Up

Review reading inequality symbols and translating simple statements.

1

How do you read the symbol ≥\geq?

A.

Less than

B.

Greater than

C.

Greater than or equal to

2

Translate "at least 1010" into an inequality using xx: xx   ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲   1010.

B

Fluency Practice

1

Write the bearing-style statement "fewer than 2020 learners" as an inequality using nn: nn   ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲   2020.

2

Which inequality means "the temperature is not below 1818 degrees"?

A.

t<18t < 18

B.

t≥18t \geq 18

C.

t>18t > 18

3

Solve for xx: x+3<8x + 3 < 8.

4

Solve for xx: 2x≥102x \geq 10.

5

Solve for xx: −2x<6-2x < 6.

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