Mastering Decimals and Equations

What is 3.6 multiplied by 2.5?

• 7.5

• 8.2

• 10.5

• 9

Divide 7.2 by 0.3.

• 20

• 24

• 30

• 18

Calculate 15% of 200 using compound percentages.

• 50

• 40

• 30

• 25

If the upper bound of a length is 5.6 cm, what is the maximum possible length?

• 5.6 mm

• 5.6 cm

• 5.0 cm

• 6.0 cm

If the lower bound of a weight is 3.2 kg, what is the minimum possible weight?

• 3.0 kg

• 4.0 kg

• 3.2 kg

• 2.5 kg

Construct an equation for the statement: 'Three times a number is equal to 12.'

• 3x + 3 = 12

• 2x = 12

• x = 4

• 3x = 12

Solve the equation: 2x + 5 = 15.

• 5

• 7

• 10

• 0

What is the solution to the simultaneous equations: x + y = 10 and x - y = 2?

• x = 5, y = 5

• x = 8, y = 2

• x = 4, y = 6

• x = 6, y = 4

Multiply 0.75 by 0.4.

• 0.3

• 0.1

• 0.5

• 0.2

Divide 9.6 by 1.2.

• 7.2

• 10.8

• 9.0

• 8