28 Harold can use the fact, 3 X 4 = 12, to help him solve a

related problem. Which of the

following could be the problem he is

trying to solve? A □ ÷ 3 = 4 B □ - 4 = 12 C □ + 3 = 4 D □ - 3 = 4

Answer:

A □ ÷ 3 = 4

30 Mike’s math teacher gave him the

clue, 8 + 6 = 14, to help him solve a related problem. Which could be the problem Mike is trying to solve?

A 14 - □ = 8 B 8 × □ = 48 C 6 ÷ □ = 2 D 14 + □ = 20

Answer:

A 14 - □ = 8

3.10 1 Which problem can be solved using the number

sentence below? 33 × 5 = ?       A Calvin had 33 trading cards. He gave 5 of them to

Wendy. How many trading cards does Calvin have left?   B Sherman has 33 pages of stamps. Each page has 5

stamps on it. How many stamps is that all together?   C The school store sold 33 bookmarks before lunch.

They sold 5 bookmarks after lunch. How many bookmarks were sold in all?

  D Sally read for 33 minutes before dinner. She read for 5

minutes after dinner. How many minutes did she read in all?  

(Draw the answer showing all 33 pages with 5 on each):

BSherman has 33 pages of stamps. Each page has 5 stamps on it. How many stamps is that all together?

3.10

3 Sarah bought 3 boxes of crackers. There were 48 crackers in4 each box. How many5 crackers did she buy in all?

A 45B 51C 124D 144

Hint: (Draw the boxes of crackers and the amount inside each one.)

(Add them up or put the number 48 on each box.)

D 144

3.10

Maya bought 12 packages of light bulbs. There were 2 light bulbs in each package.

Which number sentence can be used to solve the problem above?

A 12 x 2 = ?B 12 ÷ 2 = ?C 12 + 2 = ?D 12 - 2 = ?

A 12 x 2 =

What is the value of the money in the box?

A $0.74 B $1.70 C $1.74 D $1.84

Answer

D $1.84

Corey bought a toy that cost $3.52. If he gives the cashier a $5 dollar bill, how much change should he get back?

A 3 dollars, 2 quarters, 2 penniesB 2 dollars, 3 quarters, 8 penniesC 1 dollar, 5 dimes, 8 penniesD 1 dollar, 1 quarter, 2 dimes, 3 pennies

Answer

D 1 dollar, 1 quarters, 2 dimes, 3 pennies

3.12.1This is one. This is one tenth.

What is

+

A 5.0B 4.9C 2.9D 0.1

B 4.9

This is one. This is one-tenth.

What is

+

A 1.5B 3.9C 5.9D 9.5

C 5.9

What is: 3.9 - 2.8 =   A 0.9 B 1.1 C 1.9 D 11

B 1.1

It took Jack 0.4 hours to pick up thesticks on the lawn and 2.8 hours to cut the grass. How much time did this take?

(What operation do you need to do?)

A 2.4 hoursB 4.2 hoursC 3.2 hoursD 3.8 hours

C 3.2 hours