Place Value
Estimation
Rounding
Addition
Subtraction
100
Write in standard form.


300,000  +   4,000  + 20,000   +  900   +  1  +  60

324,961
100
Estimate


2,342  +  459=  


2,300 + 500 = 2,800
100
round to the nearest ten and hundred


4,527

Ten: 4,530


Hundred: 4,500

100
Solve.


546 + 123 =

669
100
Solve.


5,567 - 3,234

2,333
200
Write in expanded form


435, 402

400,000  +  30,000  + 5,000  + 400  +0  + 2
200
Second grade turned in 456 box tops.  Third grade turned in 984 boxtops.  About how many did they collect in all?
1,000 + 500 = 1,500 boxtops
200
Round to the nearest ten, hundred, and thousand


5,638

Ten:  5,640


Hundred: 5,600


Thousand: 6,000

200
Solve.


6,723 + 579

7,302
200
Solve.


4,735 - 1,496

3,239
300
What is the value of the 9?


 439,450

9,000
300
Estimate.


3,730 - 623

3,700 - 600 = 3,100
300
Which two round to 4,300?


A. 4,367

B. 4,400

C. 4,298

D. 4,342

C.


D.

300
Solve.


3,491 + 2,953

6,444
300
 Ms. Smith's class solved 1,345 problems on reflex math last week.  Ms. Blair's students solved 567.  How many more did Ms. Smith solve than Ms. Blair?
778
400
write in written form.


3,456

three thousand four hundred fifty six
400
Estimate.


6,230 + 193 

6,200 + 200 = 6,400
400
Round to the nearest hundred and thousand.


6,623

Hundred: 6,600


Thousand: 7,000

400
Oceanair collected 4,789 boxtops in February.  PB Young collected 2,467 boxtops.  How many did both schools collect in all?
7,256
400
Solve.


6,349 - 583

5,766
500
write in standard form.


twenty-four thousand 4 hundred sixty three.

24,463
500
Ms. Quiero's class made 2,642 cookies for a bake-sale. Ms. Gill's class made 456 cookies.  About how many more cookies did Ms. Quiero's class make than Ms. Gill's?
2,600 - 500 = 2,100
500
Which two round to 4,000?


A. 4,670

B. 3,672

C. 4,234

D. 3,456

B. 


C.

500
On Monday Jess baked 643 cupcakes.  On Tuesday she baked 123 more and her sister baked 214 cupcakes.  How many cupcakes did Jess and her sister bake altogether?
980 cupcakes
500
The bakery made 789 brownies to sell.  On Tuesday they sold 356 of them and on Wednesday they sold 204 more.  How many brownies are left to sell?
229 brownies
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