Fractions
Decimals
Geometry and fractions
Review of previous topics
Stranger than fiction
100
How many 1/5s in 8? Write the equation and then the answer.
8 ÷ 1/5 = 40
100
3.4 - 2.56 =
0.84
100
What is the area of this rectangle?
The area is 5/7 x 3/4 = 15/28 cm2
100
What is the area of this parallelogram?
a = bh
= 8 x 15 = 120 yd2
100
James Harrison has a very rare type of blood plasma that can be used to treat Rhesus disease, which can occur during pregnancy. He's been donating blood roughly every three weeks from 1954 to 2018. How many babies is he considered to have saved?
a. 0.9 million babies
b. 1.8 million babies
c. 2.4 million babies
c. 2.4 million babies
200
Write the equation and solution represented in this tape diagram.
4 ÷ 2/3 = 6
200
8 cans of coke cost $16.80. What is the unit price?
16.80 divided by 8 = $2.10
200
What is the width of this rectangle?
The width is 3 m.
200
Work out the percentages:
1. 10 is 50% of what number?
2. 20% of 240 is what?
3. 75% of 200 is what?
1. 20
2. 48
3. 50
200
There has been recent good news about all of the animals in the photo below. What was this good news? (closest to the real reason wins).
They have all been removed from the endangered animal list.
300
Students in a sixth-grade class are raising money for an end-of-year camping trip. So far, they have raised $240. This is 2/5 of the cost of the trip. How much does the trip cost?
You need to include a tape diagram to get the points.
300
A rectangular hallway is 8.2 meters by 2.7 meters. Find the area of the hallway.
22.14 meters squared
300
What is the area of this triangle?
The area is 1/2 x 2 5/6 x 7 = 29.75 in2
300
A grocery store sells 3 pounds of green apples for $2.34 and 2 pounds of red apples for $1.86. Which apples have the better unit price?
Green: 2.34 divided by 3 = $0.78 or 78 cents per pound
Red: 1.86 divided by 2 = $0.93 or 93 cents per pound
The green apples have the better price per pound.
300
A recent study out the UK found that dairy cows who live in barns where soothing music is played produce more milk. What percentage extra milk did those cows produce? (closest guess wins).
3% more milk
400
Before taking off, a plane travels at a speed of 1/4 km per second. The runway is 5 3/4 km. How many seconds does it take the plane to get to the end of the runway?
First write the equation and then use your choice of method to solve.
5 3/4 ÷ 1/4 =
23/4 ÷ 1/4 = 23
400
Part one: A piece of rope is 5.75 meters in length. If it is cut into 0.05 meter pieces, how many pieces will there be?
Part one: Multiply both dividend and divisor to make 575 divided by 5. The answer is 115 pieces of rope.
400
What is the volume of this rectangular prism?
The volume is 3 3/4 cm3
400
Find the area of this polygon.
The area of the polygon is 33 u2
400
In Sweden, a contest known as Kaninhoppning pits rabbits against each other as their owners lead them over jumps and around obstacles. In this competition, there is a high and a long jump contest. What is the world record for the highest rabbit jump in cm? (closest guess wins).
99.5cm high (3.25ft)
500
Lyn is running to get ready for a marathon. The first day, she runs 14 2/7 km and the second day she runs 22 2/9 km. How many times as long did she run on the second day than the first day?
22 2/9 divided by 14 2/7 = 14/9 = 1 5/9
500
A tortoise travels 0.945 miles in 3.5 hours.
1. If it moves at a constant speed, how many miles per hour is it travelling?
1. 0.27 miles an hour. (0.945 divided by 3.5)
500
500
Lisa's mother goes to a bicycle store to buy Lisa a new bike. The one Lisa wants originally cost $350 but it is 20% cheaper in a sale. After a few years, Lisa outgrows the bicycle but it is still in excellent condition so her mother sells it second-hand to another family for 55% of the price they paid for it in the store. How much did the family pay for the second-hand bicycle?
20% of $350
20% = 20/100 x 350 = 0.2 x 350 = $70
$350 - $70 = $280
55% of 280 = 55/100 x 280 = 0.55 x 280 = 154
The family paid $154 for the bicycle.
500
Which is wider - the moon or Australia? Have a guess too at the difference in size (correct answer and closest guess wins).
The moon sits at 3,400 kilometers (2,113 miles) in diameter, while Australia’s diameter from east to west is almost 4,000 km (2,485 miles).
