Substitute into formula

A mechanic tests the headlamps on a car.

Each head lamp uses 100 watts of power. The voltage is 12 volts.

Use the formula in the picture to calculate the current used by each headlamp.

• 0.12 amps

• 0.83 amps

• 1.2 amps

• 8.3 amps

Tags

CCSS.6.EE.B.7

The temperature in Sydney one morning is 104F.

Convert this temperature to degrees Celsius using the formula in the picture.

• 26c

• 40c

• 54c

• 86c

Tags

CCSS.7.EE.B.4A

An aquarium has a radius of 40 cm and a height of 100 cm. The aquarium is full of water.

What is the volume of water in the aquarium?

Use 3 for pi

• 160L

• 240L

• 480L

• 1440L

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

 $\frac{1}{3}\pi r^2h$  = Volume of a cone

Use 3.14 for pi.

An association holds a summer party. They give each child a cornet full of ice cream.

The radius of the cornet cone is 4 cm and the height 9 cm 
Use the above formula to calculate the volume of the cornet cones.

• 150.72

• 1440

• 14.4

• 72

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

In Europe an approximate formula to convert miles per gallon to litres per 100 KM is shown in the picture above.

A car travels 35 miles per gallon.

What is this in litres per 100 km?

• 125

• 80

• 12.5

• 8

The final speed of an accelerating vehicle can be found

using the formula in the picture.

A car is travelling at 20 kmhr when the driver decides to overtake a lorry.

What is the final speed of the car if the initial speed is 20 kmhr and the acceleration is 5kms,

and the time is four seconds?

• 40

• 80

• 12.5

• 8

Tags

CCSS.7.EE.B.4A

Evaluate when a = 15:
2(a - 5) + 2

• 22
• 27
• 14
• 7

Tags

CCSS.6.EE.A.2C

A garden designer plans a flower bed.

She uses the formula in the picture above to work out the area in square meters of the flower bed. So she can apply soil treatment.

What is the area of the flower bed?

• 3.0m²

• 3.5m²

• 3.6m²

• 4.2m²

Tags

CCSS.6.G.A.1

 $\frac{PRT}{100}$  Is the formula for calculating simple interest is 
 
 
I  is  the interest earned, P is the principal invested. 

R is the rate, and T is the time period. 
Find I when P = £2000, R = 3 and T = 4 years. 

• £2.40

• £24

• £240

• £2400

Tags

CCSS.6.EE.B.6

A student earns £15 000 in her first year of work.

She makes a monthly repayment of her loan.

She works out the monthly amount using the formula above.

How much is the monthly payment

• £37.50

• £112.50

• £375.00

• £450.00

Tags

CCSS.HSF.IF.A.2