Unit 1 Math Review

Addition

100

What is 143 + 152?

Show your work.

295

200

Decompose (break apart) the numbers to add 548 + 391. Show your work.

    500 + 40 + 8

+  300 + 90 + 1

 _______________

800 + 130 + 9 = 939

(Final answer: 939)

300

The sum of the equation below is written using hundreds, tens, and ones. Complete the equation.

Write your answer in the blanks.

659 + 278 = ___ hundreds + 12 tens + ___ ones

8 hundreds

17 ones

400

Which of these diagrams or solutions represents 375 + 226?

A. 300 + 70 + 5

    200 + 20 + 6

__________________

    500 + 90 + 1

B.   375

   + 226

___________

         11

         90

       500

C. 3 hundreds + 2 hundreds = 5 hundreds

70 tens + 20 tens = 90 tens

5 ones + 6 ones = 11 ones

B.   375

   + 226

___________

         11

         90

       500

500

264 + 438 = 

702

Subtraction

100

Find 340 - 276.

Show your work.

64

200

What is 849 - 524?

325

300

Add on to subtract. 

Write the following equations and fill in the blanks:

176 + 4 + ___ + 5 = 205,

so 205 - 176 = ___

176 + 4 + 20 + 5 = 205,

so 205 - 176 = 29

Blank one: 20

Blank two: 29

400

The difference of the equation below is written using hundreds, tens, and ones. Complete the equation.

Fill in the blanks.

453 - 196 = 2 hundreds + __ tens + __ ones

5 tens

7 tens

500

Add on to subtract. Fill in the blanks.

134 + 6 + ___ + 1 = 201, 

so 201 - 134 = ___

134 + 6 + 60 + 1 = 201, 

so 201 - 134 = 67

Blank one: 60

Blank two: 67

Rounding

100

Which of the following numbers round to 480 when rounded to the nearest ten? Choose all the correct answers.

A. 477

B. 485

C. 474

D. 483

E. 472

A. 477

D. 483

200

True or False:

378 rounded to the nearest ten is 380.

True

300

True or False:

254 rounded to the nearest hundred is 250.

False.

400

Between which two tens is the number 176? Show your work on a numberline.

176 is between 170 and 180.

500

There are 827 students at Barton School. The principal rounds to tell people how many students are at Barton School.

Fill in the blanks:

Part A: Rounded to the nearest ten, there are about ____ students at Barton School.

Part B: Rounded to the nearest hundred, there are about ____ students at Barton School.

Part A: Rounded to the nearest ten, there are about 830 students at Barton School.

Part B: Rounded to the nearest hundred, there are about 800 students at Barton School.

Part A: 830

Part B: 800

Word Problems

100

Isabel scores 218 points bowling. Jean scores 194 points bowling. How many points do they score in all?

Show your work.

They score 412 points in all.

200

An orchard sells 96 pears. It sells 300 more pumpkins than pears. How many pumpkins and pears does the orchard sell? 

An orchard sells 492 pumpkins and pears.

300

Mrs. Hines scores 156 points bowling. Mrs. Dunning scores 199 points bowling. How many points do they score in all? Show your work.

They score 355 points in all.

400

Mrs. Stovall scores 277 points bowling. Mrs. Glock scores 189 points bowling. How many points do they score in all? Show your work.

They score 466 points in all.

500

Mrs. Reid rounded and said we have about 500 students at FES. Mrs. Wilson rounded and said we have about 520 students at FES. Mrs. Pike said they're both correct. How can they both be correct?

Mrs. Reid rounded to the nearest hundred and Mrs. Wilson rounded to the nearest ten.

Surprise!

100

Which of the following numbers round to 640 when rounded to the nearest ten? Choose all the correct answers.

A. 645

B. 634

C. 641

D. 635

E. 647

C. 641

D. 635

200

Between which two tens is the number 263? Show your work on a numberline.

163 is between 160 and 170.

300

Between which two hundreds is the number 268? Show your work on a numberline.

268 is between 200 and 300.

400

Between which two tens is the number 263? Show your work on a numberline.

263 is between 260 and 270.

500

Find the difference of 634 and 456.

178