Multiplying/Dividing numbers by 10s,100s,1000s and measuring length
172.874 x 100
17287.4
752 087
Round to the nearest ten thousand
750 000
56.8 x 12
681.6
0.08
1) percentage 2) fraction out of 100 3) irreducible fractoin
1) 8%
2) 8/100
3) 2/25
When a dice is rolled what is the probability of getting an even number?
1/2
3842/10
384.2
227 486
Round to the nearest hundred
227 000
2.85x45
128.25
35%
Which expression(s) are equivalent to this number?
1) 35/100 2) 3/4 3) 7/20 4)0.03
1) 35/100 and 3) 7/20
In a class, there are 15 boys and 10 girls. When a teacher calls out the name of a student, what is the probability that it is the name of a girl?
2/5
93m + 5km + 600dm = _______ m
93m + 5000m + 60m =
5153m
86.395
Round to the nearest tenth
86.4
79.95x27
2158.65
Elena goes to a clothing store and chooses the following articles: a T-shirt for $18.00, 3 pairs of pants for $39.00 each, a dress for $28.00 and a pair of sandals for $32.00. If the bill comes to at least $175.00, Elena will get a 20% discount. How much money will Elena spend at the clothing store?
3 x 39 = 117
117 + 18 + 28 + 32 = 192
1/5 = 39/195
195 - 39 = 156
Elena will spend $156
A carpenter is trying to hit a nail with a hammer. For every ten shots, he correctly hits the nail six times and misses it four times. What is the probability that the carpenter hits the nail correctly?
6/10 = 3/5
The 100 dairy farmers who belong to the local co-op used 325 428 kg of corn this year. How much corn did each farmer use on average?
325 428/100 =
3254.28 kg per farmer
108.094
Round to the nearest hundredth
108.09
At the grocery store, Jacob’s mother buys the following items as well as several others: 5 cans of tomatoes for $1.99 each, 3 loaves of bread for $2.36 each, 2 bottles of salad dressing for $3.89 each and 6 pots of yogourt for $0.87 each. The amount of her bill was 10 times the cost of these 4 items. What was the total amount of Jacob’s mother’s grocery bill?
1.99 x 5 = 9.95
3.89 x 2 = 7.78
2.36 x 3 = 7.08
0.87 x 6 = 5.22
=$300.30
At the bookstore, Naomi bought 3 books for $12.00 each and 2 board games for $24.00 each. She also spent $8.00 on candy. This week, the bookseller is offering a 25% discount to all her clients. How much money did Naomi spend in all at the bookstore?
3 x 12 = 36
2 x 24 = 48
38 + 48 + 8 = 92
1/4= 23/92
92 - 32 = 69
Naomi spent $69
William rolls a die with 20 sides numbered 1 to 20. If he rolls it only once, what is the probability that he will get a number that is divisible by 4?
5/20 = 1/4
1/4 or 25%
The climbing frame in the schoolyard throws a shadow that is 125 cm long. If the shadow from the school building is 40 times as long, how long is it in metres?
125 x 40 = 5000cm
= 50m
$269.68
Round to the nearest dollar
$270
At the bookstore, Mark bought 4 graphic novels for $17.89 each, and Logan bought 3 fantasy novels for $24.78 each. Which of the 2 boys spent more money? How much more did he spend?
Mark: 4 x 17.89 = 71.56
Logan: 3 x 24.78 = 74.34
74.34-71.56 = 2.78
Logan spent more money with a total of $74.34, and spent $2.78 more.
Represent the additions on the number line
1/4 + 3/8
5/8
(Show on the board)
Jack has a deck of cards. The pack contains 10 clubs, 8 spades, 12 hearts and 7 diamonds.
What is the probability that Jack picks a diamond or a club?
17/37