Operations to Solve Problems Review

Check all the equations that are FALSE.

• 34 - 12 = 44 - 20

• 15 + 5 = 14 + 4

• 30 + 30 = 12 X 5

• 24 X 3 = 9 X 7

• $24\div\ 2\ =\ 36\ \div\ 3\$

Use this equation.

25 + n = 20 + 10

Select the statement that completes this argument.

25 is 5 more than 20, so n must be _______.

• 5 more then 10

• 5 less then 10

• Equal to 20 + 10

• Equal to 25 + 10

Select why this equation is true or false without adding.

51 + 27 = 30 + 26

• False because, if 1 is subtracted from 51 to get 50 then, 50 and 27 more would not equal 30 and 26 more. Putting together two larger numbers is not the same as putting together two smaller numbers.

• True because, if we compare 51 to 27 and 30 to 26 they are exactly the same distance apart on a number line. They just have different starting and ending point.

• False because, 51 plus 27 does not equal 30.

• True because, both 51 minus 27 and 40 minus 26 result in the same answer of 24.

Check all the TRUE equations.

• 52 - 19 = 50 - 21

• 52 - 19 = 47 - 14

• 52 - 19 = 60 - 20

• 52 - 19 = 54 - 21

• 52 - 19 = 62 - 29

Sally solves for t using comparative relational thinking. Select the statement that accurately describes solving for t using comparative relational thinking.

12 + 58 = 60 + t

• Since 60 is 2 more than 58 then, t will be 2 more than 12.

• Since 58 is 2 less than 60 then, t will be 2 less than 12.

• Since 56 is 2 less than 58 then, t will be 2 less than 12.

• Since 58 is 2 less than 60 then, t will be 2 more than 12.

Sara has $47. She spent $33 on a new dress. When she got home from shopping, her grandmother gave her $10. How much money did Sara have at the end of the day?

• $24

• $90

• $4

• $20

Jill bought three pairs of pants. Each pair costs $15. She bought four shirts, each costing $5. How much did Jill spend in all?

• $20

• $60

• $65

• $10

The owner of a flower shop ordered 352 roses and 209 carnations. She ordered 3 times as many lilies as carnations. What is the total number of flowers she ordered?

• 561 Flowers

• 1,188 Flowers

• 1,208 Flowers

• 627 Flowers

The Smith family wants to go on a trip to Disney World. Admission prices are $75 for each adult and $55 for children. Parking is an additional $20. If the Smith family has 2 adults and 3 children, which equation could be used to solve for the total cost (t) of their trip?

• t = (75 x 2) + (55 X 3)

• t = (75 + 2) X (55 + 3)

• t = (75 x 2) + (55 X 3) + 20

• t = (75 + 2) X (55 + 3) + 20

Ms. Dougherty is hosting a dinner party for 25 people. She would like to arrange tables and chairs so that 6 guests sit at each table. They will need 3 additional tables for setting up the buffet. How many tables should the Johnsons plan to use for the event?