Constructing Numerical Expressions in Pre-Algebra

How many marbles did Alan initially have in his pocket?

• 9

• 4

• 5

• 27

How many additional marbles did Alan find?

• 6

• 3

• 4

• 5

What operation did Alan perform after finding the additional marbles?

• He divided them

• He subtracted them

• He tripled them

• He doubled them

What is the numerical expression that models the total number of marbles after tripling?

• 3 * (4 + 5)

• 4 * 5 + 3

• 3 + 4 * 5

• 4 + 5 * 3

How many marbles did Alan have before tripling?

• 4

• 27

• 5

• 9

What is the final count of marbles after tripling?

• 9

• 18

• 27

• 36