Cumulative Review Chapters 1-7

Which of these pairs of numbers differ by 495 when they are squared?

• 17 and 19
• 21 and 30
• 27 and 18
• 23 and 32

Which of the following inequalities is true?

• -78 > -125

• Ι-16Ι > Ι-45Ι

• 68 > Ι-389Ι

• -0.89 > 1

What is the value of ⁵/₈ ÷ ³/₄?

• ¹⁵/₃₂
• ⁵/₆
• 1 ¹/₅
• 2 ¹/₂

An ounce of cranberries costs $2.35. How much do 5.6 ounces of cranberries cost?

• $11.75
• $13.16
• $15.26
• $41.96

Which of the following ratios is equivalent to 49 : 35?

• 7 : 4
• 14 : 25
• 21 : 15
• 112 : 75

The ratio of the length of a ruler to the length of a pencil is 8 : 7. What fraction of the total length of the ruler and the pencil is the length of the pencil?

• ⁷/₁₅
• ⁸/₁₅
• ⁷/₈
• 1 ¹/₈

There are ²/₅ as many vans as cars and ²/₃ as many vans as motorbikes in a parking lot. What is the ratio of the number of vans to the total cars and motorbikes?

• 1 : 2
• 1: 4
• 2 : 5
• 2 : 10

Leila mixes red dye and yellow dye in the ratio 5 : 4 to make 2.7 liters of orange dye. What is the volume of yellow dye used?

• 0.3 L
• 0.6 L
• 0.9 L
• 1.2 L

A machine can sew 36 pairs of jeans in 45 minutes. How many pairs of jeans can the machine sew in 1.5 hours?

• 45
• 72
• 90
• 120

A wooden fence costs $8.50 per foot. How much do 5 yards of wooden fence cost?

• $17
• $25.50
• $42.50
• $127.50