Order of operations (PEMDAS)
Challenge Questions
Write an equation using a number for the unknown
Basic Facts: Multiplication
Basic Facts: Division
100
3 + (2 X 9) =
3 + 18 = 21
100
The fruit seller packs 72 oranges into bags of 8 each. He sells all the oranges at $4 a bag. How much money did he receive?
(72 oranges ÷ 8 in each bag) X $4 for each bag = total $ (72 ÷ 8) X $4 = t 9 X $4 = t $32 = t He received $32.
100
John has two dressers. Each dresser has 5 drawers. How many drawers are there in all?
2 X 5 = d d = 10
100
In less than 10 seconds: 8 X 8 =
64
100
In less than 10 seconds: 35 ÷ 5 =
7
200
(3 X 6) - 5 =
18 - 5 = 13
200
There are 8 bags of yellow and green balloons. Each bag contains 7 balloons. If there are 35 yellow balloons, how many green balloons are there?
(8 bags X 7 balloons) - 35 yellow = green (8 X 7) -35 = g 56 - 35 = g 21 = g There are 21 green balloons.
200
Emma's family has 10 book shelves. Each shelf has 7 chapter books and 4 nonfiction books on it. How many books are there in all?
10 X (7 X 4) = b 10 X 28 = b 280 = b There are 280 books in all.
200
In less than 10 seconds: 7 X 6=
42
200
In less than 10 seconds: 12 ÷ 3 =
4
300
(10 X 13) + 10 =
130 + 10 = 140
300
At a toy store, Andy buys 3 boxes of Play Doh. Each box of Play Doh has 2 containers of Play Doh. Andy's friend buys one pack of Play Doh with 6 containers. Explain how you can tell that Andy and his friend both have the same amount of Play Doh.
3 boxes X 2 containers in each box = 6 containers 1 pack X 6 containers in each pack = 6 containers
300
Jamie's house has 3 bedrooms. Each bedroom has a bed with 2 sheets, 2 pillowcases, and 1 blanket. How many pieces of linen are there in all?
3 X (2 + 2 + 1) = p 3 X 5 = p 15 = p There are 15 pieces of linen in all.
300
In less than 10 seconds 70 X 9 =
630
300
In less than 10 seconds: 32 ÷ 4 =
8
400
(9 X 6) + (4-1) =
54 + 3 = 57
400
Leo earns $8 a week for doing chores. After 7 weeks, he buys a gift and has $38 left. How much does he spend on the gift?
($8 X 7 weeks) - $38 = g $56 - $38 = g $18 = g Leo spent $38 on the gift.
400
Korina watches 3 episodes of Sponge Bob. Each episode is 20 minutes long. How long does Korina spend watching TV?
3 X 20 = m 60 = m She spends 60 minutes watching TV.
400
In less than 10 seconds: 9 X 30 =
270
400
In less than 10 seconds: 36 ÷ 6 =
6
500
(63 ÷ 9) X (8 X 5) =
7 X 40 = 280
500
Matt buys a pack of postage stamps. He counts 9 rows of 4 stamps. He thinks of 10 fours to find the total number of stamps. Show the strategy that Matt might have used to find the total number of stamps.
Matt thinks about 10 rows of 4 stamps, then he subtracts 1 row, because there is really only 9 rows. (10 X 4) - (1 X 4) = s 40 - 4 = s 36 = s He buys 36 stamps.
500
Karen's chapter book is 112 pages. Karen reads some pages of her chapter book. There are 24 pages left to read. How many pages did Karen read?
112 - p = 24 112 - 24 = p 88 = p Karen read 88 pages.
500
In less than 10 seconds: 6 X 7 =
42
500
5 ÷ 1 =
5
M
e
n
u