Unit 1 Math Review

Estimate the difference to the nearest hundred: 728-283

Estimate the difference to the nearest hundred: 69 + 238 + 82

• 350

• 380

• 400

• 390

Estimate the sum: 19,842 + 321.

What is a reasonable range for the answer to this problem?

• 1,000 to 9,999

• 10,000 to 11,000

• 20,000 to 21,000

• 100,000 to 110,000

Bob's mom had $100 to spend. She has items that cost $52, $31, and $8 in her basket. About how much money will Bob's mom have left?

• No money left

• About $10

• About $50

• About $90

Tommy had 378 fewer pencils than Sally. Tommy has 867 pencils. How many pencils does Sally have?

• 489

• 1,245

• 511

Maria read 678 pages in 3 days.

First day- 293 pages

Second day- 321 pages

Third day- ?

How many pages were read on the third day?

• 1,295

• 100

• 614

• 64

A square garden plot has a length of 23 feet. What is the perimeter of this garden?

• 23 feet

• 46 feet

• 92 feet

• 529 feet

A bulletin board is rectangular and measures 9 feet by 13 feet. How many feet of border will be needed to go round?

• 22 feet

• 44 feet

• 117 feet

• 13,689 feet

Xavier warms up by jogging around the soccer field. The soccer field is 30 meters by 20 meters. How far did he jog?

• 50 meters

• 100 meters

• 600 meters

• None of the above

Sally has a mat with a perimeter of 86 inches. Each Lego piece is one inch long. How many Legos to surround half?

• 43 legos

• 86 legos

• 344 legos

• 7,396 legos