Chapter 3

Regroup

100

68x53

3,604

200

61x54

3,294

300

90x27

2,430

400

30x47

1,410

500

78x56

4,368

Multi step

100

Mason counted an average of 20 birds at the feeder for 20 days.  Lee counted 21 birds for 16 days.  How many more birds did Mason count than Lee?

64 birds

200

At East school, each of the 45 classrooms have 22 students.  At West school, each of 42 classrooms have 23 students.  How many more students does East have than West?

24 students

300

A zoo gift shop orders 18 boxes of 75 key rings and 15 boxes of 80 magnets.  How many more key rings than magnets were order?

150

400

Ace ordered 17 boxes with 85 ball bearings.  They also ordered 15 boxes with 90 springs.  How many more ball bearings than springs were ordered?

95

500

Elton hiked 16 miles each day for 12 days.  Lola hiked 14 miles each day for 16 days.  How many miles did they hike in all?

416

checkpoint

100

35x10

350

200

70x50

3500

300

14x16

224

400

81x38

3078

500

76x45

3420

checkpoint 2

100

12x60

720

200

30x40

1200

300

16x90

1440

400

43x25

1075

500

92x38

3496

word

100

Ms. Traynor's class is taking a field trip. The trip will cost $26 for each student. There are 22 students in the class.  What is the best estimate of the cost?

$660

200

The cost of a ski lift ticket is $31. How much will 17 tickets cost?

$527

300

A carnival snack booth made $76 selling popcorn. It made 22 times as much selling cotton candy.  How much did the booth make selling cotton candy?

$1,672

400

Last year, the city library collected 117 used books. This year they collected 3 times as many. How many books did they collect this year?

351 books

500

Washington Elementary has 232 students.  The high school has 6 times as many students.  How many students does the high school have?

1,392