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Question 1 of 5
Susie wants to paint an area of 270 m2. If one can of paint covers 50 m2, how many cans of paint will she need?
Incorrect
First, list down the given values in the problem.
1 can of paint: 50 m2
? cans of paint: 270 m2
To find ?, simply divide 270 by 50
Proceed with dividing the two numbers
Arrange the values for long division
Divide both divisor and dividend by 10 for simpler computation
This means both zeroes at the end would be cancelled
5 does not go into 2 but instead goes into 27 five times. So write 5 above the line.
Multiply 5 to 5 and write the answer below 27
Subtract 25 from 27 and write the answer one line below
Since 5 does not go into 2, add a zero after 27 and bring it down beside 2. Also, place a decimal point after 5.
5 goes into 20 four times. So write 4 above the line.
Multiply 4 to 5 and write the answer below 20
Since 4×5=20, there are no more remainders.
Therefore, if 270÷50=5.4, Susie will need 6 cans of paint.
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Question 2 of 5
There is a 1.1 litre bottle of orange juice. How many glasses can it fill if each glass has a capacity of 0.2 litre?
Incorrect
First, list down the given values in the problem.
Amount of orange juice: 1.1 litres
Capacity of each glass: 0.2 litre
To find how many glasses can be filled, divide the amount of orange juice by the capacity of each glass.
First, turn the divisor into a whole number by multiplying both values by 10
Since the decimal is being multiplied by 10, simply move the decimal point 1 place to the right.
Proceed with dividing the two numbers
Arrange the values for long division
2 does not go into 1 but instead goes into 11 five times. So write 5 above the line.
Multiply 5 to 2 and write the answer below 11
Subtract 10 from 11 and write the answer one line below
Since 2 does not go into 1, add a zero after 1 place a decimal point after 5.
5 goes into 10 five times. So write 5 above the line.
Multiply 5 to 2 and write the answer below 10
Since 5×2=10, there are no more remainders.
Therefore, a bottle with 1.1 litres of orange juice can fill up 5.5 glasses.
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Question 3 of 5
Incorrect
First, convert the metres into centimetres.
Proceed with dividing the 8 cm by 400 cm
Arrange the values for long division
8 cannot be divided by 400. In this case, add a 0 next to 8 and add a decimal point above the line
80 still cannot be divided by 400. In this case, add another 0 next to 80 and also add a 0 above the line, after the decimal point
400 goes into 800 two times. So write 2 above the line.
Multiply 2 to 4000 and write the answer below 800
Since 2×400=800, there are no remainders in this division.
Therefore, 8 cm of 4 m is 0.02 cm.
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Question 4 of 5
A case of bottles weighs 6 kg. If each bottle weighs 0.5 kg, how many bottles are in the case?
Incorrect
First, list down the given values in the problem.
Weight of case: 6 kg
Weight per bottle: 0.5 kg
To find how many bottle are in the case, divide the weight of the case by the weight per bottle.
First, turn the divisor into a whole number by multiplying both values by 10
Since the decimal is being multiplied by 10, simply move the decimal point 1 place to the right.
Proceed with dividing the two numbers
Arrange the values for long division
5 goes into 60 twelve times. So write 12 above the line.
Multiply 12 to 5 and write the answer below 60
Since 12×5=60, there are no more remainders.
Therefore, there are 12 bottles in the case.
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Question 5 of 5
A car travels 97.2 km with 9 litres of fuel. How far can it travel with 1 litre of fuel?
Incorrect
First, list down the given values in the problem.
Distance traveled: 97.2 km
Fuel used: 9 litres
To find how many glasses can be filled, divide the distance traveled by the amount of fuel used.
Ignore the decimal point and proceed with dividing the two numbers
Arrange the values for long division
9 goes into 97 ten times. So write 10 above the line.
Multiply 10 to 9 and write the answer below 97
Subtract 90 from 97 and write the answer one line below and bring down the remaining digit 2
9 goes into 72 eight times. So write 8 above the line.
Multiply 8 to 9 and write the answer below 20
Since 8×9=72, there are no more remainders.
Finally, count how many place values from the decimal point to the right of the two values.
Get the final quotient by moving the decimal point of the initial quotient 1 place to the left.
Therefore, the car can travel 10.8 km with 1 litre of fuel.