Rounding
Addition with regrouping
Subtraction across zeros
Subtraction with regrouping
Word problems
100

Round 187 to the nearest ten.

190

100

816 + 255

1,071

100

100 - 6

94

100

93 - 27

66

100

Biscuit has 45 toys. He got 16 for his birthday. How many toys did he start with?

29.

200

Round 14,192 to the nearest ten thousand.

14,000

200

4,647 + 3,085

7,732

200

2007 - 908

1,099

200

1,274 - 865

409

200

Alex has drawn 392 pictures this year. He drew 105 in January. How many pictures did he draw in February?

287.

300

Round 862,042 to the nearest hundred thousand.

900,000

300

69,147 + 12,085

81,232

300

27,000 - 16,450

10,550

300

8,263 - 5,645

2,618

300

Renesmee has 497 stickers in her collection. She got 112 stickers for her birthday, and 291 over winter break. How many stickers did she start with?

94.

400

Round 1,375 to the nearest hundred.

1,400

400

497 + 533

1,030

400

501 - 72

429

400

182 - 84

98

400

Ms. O pet her cat, Biscuit, 5,765 times in February She pet him 1,042 times the first week, 1,278 in the second week, and 1,141 times in the third week. How many times did she pet him in the fourth week of February?

2,301.

500

Round 42,954 to the nearest hundred.

43,000

500

421,865 + 205,930

627,795

500

800,000 - 459,421

340,579

500

601,368 - 489,459

111,909

500

Nathaniel was playing a game and earned 64,187 points. He earned 20,002 points on level 1. He earned 14,862 points on level 2. How many points did he earn on level 3?

29,339 points.