Unit 3 Assessment Review

Rounding

100

Round 67 to the nearest ten.

70

200

Round 352 to the nearest hundred.

400

300

Round 825 to the nearest ten.

830

400

Round 1, 393 to the nearest ten and the nearest hundred.

Nearest ten: 1,390
Nearest hundred: 1,400

500

Round 504 to the nearest ten and hundred

Nearest ten: 500

Nearest hundred: 500

Addition

100

49+72

121

200

472+123

595

300

273+407

680

400

135+391

526

500

549+264

813

Subtraction

100

99-37

62

200

153-81

72

300

213-144

69

400

373-138

235

500

846-258

588

Story Problems

100

Ian has 248 Legos from one set and 323 Legos from another set.  How many Legos does Ian have altogether?

571 Legos

200

Ms. Novotny's class and Ms. Goree's class want to see who has read the most books this school year.  Ms. Novotny's class has read 198 books.  Ms. Goree's class has read 236 books.

a. Which class has read the most books?

b. What is the difference between the number of books read by Ms. Novotny's class and Ms. Goree's class?

a. Ms. Goree's class

b. 38 books

300

At MDIS, there are 140 students.  48 of those students are in the middle school and 20 of those students are in the high school.   How many students are in elementary school?

72 students

400

There are 140 students at MDIS.  62 of them are boys.  How many girls go to MDIS?

79 girls

500

Jose wants to put some of his toys into his new toy box.  It holds about 500 toys.  He has 252 Pokemon cards, 435 legos, 235 marbles, and 198 mini cars.  Which two types of toys should Jose put into his toy box so that it holds as close to 500 toys as possible?

Pokemon cards and marbles

Grab Bag

100

True or false:

152-49=153-50

True

200

True or false:

123+149=112+150

False

300

145+227=___+122

250

400

491-267=___-148

372

500

Which of the following numbers has a sum as close to 1000 as possible?

522     789     210     456     325

289 and 210