All the math goes like this

Rounding

100

 Round 568,794 the nearest thousand

569,000

200

Round 829,979 to the nearest hundred.

830,000

300

987,656,543 rounded to the nearest ten thousand.

987,660,000

400

876,986,987 rounded to the nearest hundred million.

900,000,000

500

677,115 rounded to the nearest hundred thousand 

700,000

Addition

100

68+456

524

200

858+445

1303

300

987+5678

6665

400

6759+637

7396

500

766,966,766 + 12

766,966,778

Multiplication

100

6x4

24

200

8x5

40

300

9x7

63

400

6x12

72

500

60x5

300

decimals

100

1.5+1.5 

3

200

3.6-2.3 

1.3

300

5.7+3.9

9.6

400

9.3+3.9

13.2

500

17.9-8.1

9.8

Word Problems

100

Matthew had 7 apples and his 5 friends took 1 each. How much apples does Matthew have left.

2 apples

200

Alexis was 10 years old in 4th grade and she was 9 years old in 3rd grade. how old was she in 1st grade?

7 years old

300

Eli went to a restaurant and he ordered 6 burgers he ate 4 burgers. How many burgers are left.

2 burgers 

400

 Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

$2 each

500

The Cooking Club made some pies to sell at a basketball game to raise money for the new math books. The cafeteria contributed four pies to the sale. Each pie was then cut into five pieces and sold. There were a total of 60 pieces to sell. How many pies did the club make?

8 pies