math qiz V2

The density of this material is 2 g/cm³.
There are 24 cm³  Find the total mass.

• 12 grams
• 48 grams
• 12 g/cm³
• 48 g/cm³

What is the volume of 150.0 grams of lead if it has a density of 11.3 g/cm³?

• 13.3 g

• 13.3 cm³

• .075 g

• 1695 cm³

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 ml

• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

The number 43.4 has been rounded to the nearest 1 decimal place. Find its lower and upper bounds.

• 42 ≤ 43 < 44

• 43.3 ≤ 43.4 < 43.4

• 43.35  ≤ 43.4  < 43.45

The number 22.4 has been rounded to the nearest 3 significant figures. Find its lower and upper bounds

• 22.35  ≤ 22.4  < 22.45

• 22.3 ≤ 22.4 < 22.4

• 23 ≤ 24 < 25

The number 79 has been rounded to the nearest whole number. Find its lower and upper bounds

• 78.5  ≤ 79  <79.5

• 78 ≤ 79 <80

• 78.4 ≤ 79 <79.4

The number 12 has been rounded to the 2 significant figures. Find its lower and upper bounds

• 115 ≤ 12 < 125

• 11.55 ≤ 12 < 12.55

• 11.5  ≤ 12  < 12.5

The number 16.2 has been rounded to the nearest integer. Find its lower and upper bounds

• 15 ≤ 16 < 17

• 15.5 ≤ 16 < 16.5

• 16.15  ≤ 16  < 16.25

The number 62 has been rounded to 2 significant figure. Find its lower and upper bounds.

• 55< 60 < 65

• 55.25 ≤ 62 < 65.25

• 61.5  ≤ 62  < 62.5

The number 79 has been rounded to the nearest whole number. Find its lower and upper bounds

• 78.5  ≤ 79  <79.5

• 78 ≤ 79 <80

• 78.4 ≤ 79 <79.4