Operations on whole numbers

_____ x 9 = 63

• 6

• 7

• 8

• 9

Select all equations where x = 7 is a solution.

 $210\ \times\ ?\ =\ 630$  

• 2

• 4

• 3

• 5

3x = 12

• 4

• 24

• 9

• 36

3x = 15

What is the next step to solving this equation?

• add 3

• subtract 3

• divide 3

• multiply 3

30 x ____ = 90

• 2

• 3

• 4

• 5

I think of a number. I multiply by 2. The answer is 650. What number did I think of?

(a)  

9x___=18

• 2

• 3

• 4

• 6

What number goes in the box to make the equation below true? 
? x 3 = 12

• 4
• 9
• 15
• 36

33=__x3

• 11
• 3
• 0
• 33