Multiplying&Dividing

What do I do?

100

Write an expression for this problem:

Katherine had 5 boxes of chocolates. Each box had 12 chocolates in it. How many chocolates did she have in all?

Possible Answers:

5+5+5+5+5+5+5+5+5+5+5+5

18+18+18+18+18

5x18

18x5

200

Write an expression for this problem:

Lucas had 87 marbles. He gave 24 to Sebastian. How many marbles does Lucas have left?

87-24

300

Write an expression for this problem:

Teonn had 35 pencils. He gave an equal number of pencils to each of his 7 friends. How many pencils does he have now?

Possible Answers:

35÷7

35-7-7-7-7-7

400

Write an expression to match this story:

King had 77 pieces of candy. He divided them equally amongst himself and six of his friends. How many pieces of candy did each person get?

Possible Answers:

77÷7

77-7-7-7-7-7-7-7-7-7-7-7

Explanation: King+his 6 friends = 7 people

500

This is a TWO STEP problem. Write both expressions that would be needed to solve it. Use S for the unknown number.

Alicia had 50 Skittles. She ate 6, then she divided the rest up equally amongst 4 of her friends. How many Skittles did each friend get?

50-6=S

S÷4

Multiply Greater Numbers

100

12x4

48

200

6x15

80

300

7x20

140

400

9x18

162

500

7x19

133

Divide Larger Numbers

100

26÷13

2

200

54÷18

3

300

64÷16

4

400

96÷16

6

500

144÷12

12

Vocabulary

100

The answer to a multiplication equation is the ____________.

Product

200

A number that is multiplied by another number is called a ______________.

Factor

300

The answer to a division equation is the ______________.

Quotient

400

The number that is being divided in an equation is the _______________.

DividEND

(Because it lies, it goes at the BEGINNING of the equation.)

500

The number that divides another number is called the ______________.

Divisior

Review

100

Write the expanded form of this problem:

 346+275

300+40+6

200+70+5

200

Solve the following equation using expanded form:

424-316

108

Explanation:

400+20+4 --> 400+10+14

300+10+6 --> 300+10+6

_______________________

100+0+8=108

300

What is the area of a rectangle with a length of 14ft and a width of 3ft? REMEMBER YOUR UNITS.

42ft²

400

Which of these measurements would have an area of 64cm²?

A. Length: 8cm, Width: 7cm

B. Length: 12cm, Width: 5cm

C. Length: 16cm, Width: 4cm

D. Length: 32cm, Width: 32cm

C

500

Write an equation that would have an area of 48ft². 

Possible Answers (And the reverse because of the commutative property):

12x4

6x8

3x16

2x24

1x48