Unit 5

Which is the most reasonable estimate for 29 x 681?

• 20 x 600

• 30 x 700

• 200 x 700

• 300 x 600

True or False

2500 x 325 = 8125

• True

• True

• False

• False

Kelly as a collection of rocks. She puts the rocks into 18 groups with 76 rocks in each group.

How many rocks does Kelly have in her collection?

• 94 rocks

• 684 rocks

• 1368 rocks

• 6156 rocks

What is the product of 153 x 1024?

• 9216

• 18,972

• 155,462

• 156,672

2,182 x 391

• 853,162

• 854,956

• 723,456

• 425,968

3,144 x 113

• 355,558

• 355,272

• 378,456

• 378,425

There are 126 5th graders at Western Elementary. For a read-a-thon, 68 students read for 50 minutes, 17 students read for 30 minutes, and the rest of the 5th graders read for 40 minutes. How many minutes did the 5th graders read?

• 5300

• 5000

• 5550

• 6560

245 x 838

• 205,310

• 206.305

• 204,314

• 206,415

A woman charges $57 for a laundry service. During one year, the laundry mat had 38 services. How much money did the service company make?

• 627

• 2,400

• 2,166

• 1,556

Allen is saving to buy a skateboard for $320. He has saved $35 each month for 8 months. How much more money does Sam need to save?

• $40

• $60

• $280

• $600