Place Value
Rounding and Estimation
Real World
Addition
Subtraction
100
10,000 + 7,000 + 500 + 30 + 6 in standard form
17,536
100

Round 451 to the nearest ten.

450 

100

Vegas has 2,745 Legos. Mrs. Babbin has 1,543 fewer Legos than Vegas. How many Legos does Mrs. Babbin have?

Mrs. Babbin has 1,202 Legos.

100
6,305 + 2,512
8,817
100
8,754 - 531
8,223
200

Put in order from greatest to least: 2,064 2,046 2,604 2,640

2,640 2,604 2,064 2,046

200

Round 1,345 to the nearest  hundred.

1,300

200

5,476 people ride the Red Line in March to get into Boston. 1,486 fewer people ride the Orange Line in the same month.  How many people ride on the Orange Line in March?

 3,990 people ride the Orange Line in March. 

200
3,100 + 2,800
5,900
200
8,615 - 2,704
5,911
300
Compare: 2,998 ___ 2,989
>
300

Jaiden sold 145 cups of lemonade. Jeremiah sold 218 cups of lemonade. About how many cups did the sell in all?

They sold about 300 (or 370) in all.

300

A supermarket has 1,213 apples. 368 are green apples.  How many of the apples are red? 

 845 apples are red.

300
12,406 + 3,855
16,261
300
14,000 - 8,296
5,704
400
Write in word form: 8,527
eight thousand, five hundred twenty-seven
400

The Library has 549 fantasy books, 863 graphic novels, and 398 history books. About how many books are there in all?

There are about 1,800 books in all.

400

2,500 people visit the Children's Museum on Monday. On Tuesday, there were 532 more people at the museum than on Monday. What is the total number of visitors for both days?

There were 5,532 visitors total for both days.

400

4,265 + 2,058 = 

6,323

400

2,561 - 684 = 

1,877

500
Fill in the missing numbers 145, 135, 125, 115, ____, _____
105, 95
500

Dominic had $10,314. He spent $1,532 on a new TV. He also spent $679 on a new phone. About how much money does he have left?

He has about $8,100, or about $7,000 left.

500

Michael has 754 songs in his audio device. He has 98 more songs than Peter. How many songs do they have in all?

They have 1,410 songs in all.

500

4, 672 + 3,579 =

 8,251

500

5,010 - 3,685 =

1,325