Hayley had 89 caramels. Then, Hayley's sister took c of the caramels. What expression can show the number of caramels Hayley has left?
89 - c
100
7 x 4 - 4 ÷ 2 = 12
Went left to right. You must multiply first, then divide, then subtract. Answer is 14
100
4 + 6 x 2
16
100
Draw a model for the equation n + 8 = 9
Don't forget a key!
What does n equal?
1
100
What is the variable in the expression 4p - 2 ?
p
200
Nancy had 29 books. Then she went to a book sale and bought b more books. Write an expression that shows how many books Nancy has now.
29 + b
200
(14 - 4) + 10 ÷ 5 + 3 = 7
Went left to right. You have to do () first, then divide, then add left to right. Answer is 15
200
15 - (2 x 5)
5
200
Draw a model for the equation 6 + h = 9.
Don't forget a key!
What does h equal?
3
200
Can you divide before you multiply? Can you subtract before you add? If so, when?
When multiplying or dividing, you go in order from left to right. Same for addition and subtraction
300
Randy planted t fewer trees than Bob. Bob planted 16 trees. Write an expression that shows how many trees Randy planted.
16 - t
300
8 ÷ 2 + 3(4 + 2) = 13
Added 3 and 6 instead of multiplying. You have to do (), then divide, then multiply, then add. Correct answer is 22
300
Which operation do you perform first in the expression
9 + 6 ÷ 2 + (4 - 3 x 1)
3 x 1
300
Write an open sentence and draw a model using a key:
Oliver earned 6 extra credit points. Vivian earned e fewer extra credit points than Oliver, giving her 3 extra credit points for her test.
6 - e = 3
300
Why is it important to use the order of operations?
So everyone can solve the problem the same way
400
The jazz band has m members. To raise money for a tour, each member sold 6 raffle tickets. Write an expression that shows the number of raffle tickets sold.
6m
400
8 + 4 x 2 + (4 + 1 x 3) = 31
Added 4 + 1 before multiplying 1 x 3. If you follow PEMDAS, you will get 23.
400
54 ÷ 6 + 6 x 2
21
400
Draw a model of the following equation: 10 + r = 17.
Don't forget a key!
What is r equal to?
7
400
Write a word problem that matches this expression: 38 ÷ n =
Various answers
500
There are s students in the art club. Each member painted 15 pictures for the art show.Write an expression that shows the number of pictures the club painted.
15s
500
7 - 5 + 6(4 + 2) = 34
Worked backwards. You must go left to right when adding and subtracting. () first, then multiply, then subtract, then add. Answer is 38
500
Using 4 different numbers and at least 3 different operations, write an expression that is equivalent to 12.
Various answers
500
Draw a model for the equation 12 - s = 4
Don't forget a key!
What is equal to s?
8
500
Write down all 4 ways to show multiplication between 45 and the variable t