Math Topic 3 Review

Decimals Review

100

2.3 + 5.3

7.6

200

9.7 - 6.3 

3.4

300

.012 + 3.39

3.402

400

10.00 - 5.34

4.66

500

• I have 6 ones.

• My tenths digit is 3.

• My hundredths digit is twice my tenths digit.

• My thousandths digit is 4.

6.364

Powers of 10

100

10 x 10 x 10 x 10 x 10

Write this as an exponent

10⁵

200

10^{7 = ?}

10,000,000

300

5 x 10³ 

5,000

400

40 x 10³

40,000

500

___?___ x 10³ = 432,000

432

Multi-digit multiplied with single digit

100

32 x 2

64

200

312 x 3

936

300

765 x 7 

5,355

400

Kevin buys 7 boxes of books for his best friend Alex. Each box has 136 books. How many books does Kevin buy?

952

500

9,876 x 5

49,380

Area

100

Alexa has 12 sheets of stickers. Each sheet has 13 stickers. How many stickers does Alexa have in all?

156

200

Matteo puts 24 books on each shelf. He fills 12 shelves. How many books does he put on the shelves altogether?

288

300

Jayden plants 23 rows of flowers. Each row has 16 flowers. How many flowers does Jayden plant?

368

400

Diland collects 34 packs of game cards. Each pack contains 27 cards. How many cards does Diland collect in all?

918

500

Richard helps prepare 46 boxes of snacks. Each box contains 38 snacks. How many snacks does Richard prepare altogether?

1,748

Estimate

100

Does Ms. Gonzalez like to drink Starbucks or Dunkin

Both but prefers Starbucks 

200

Zuriel has 22 packs of soccer cards. Each pack has 31 cards. Estimate how many cards Zuriel has altogether.

600

300

How old is Ms. Gonzalez 

26

400

Jaylin bakes 36 trays of cupcakes. Each tray holds 18 cupcakes. Estimate how many cupcakes Jaylin bakes.

800

500

Janney collects 94 boxes of books. Each box contains 543 books. Estimate the total number of books.

45,000 or something close