Addition/Subtraction
Estimating/Rounding
Quick Multiplication
Hard Multiplication
Word Problems
100

1,675 - 293 = ?

1,382

100

What is 78,534 rounded to the nearest thousand ?

79,000

100

17,000 x 300 = ?

5,100,000

100

45 x 18 x 27 = ?

21,870

100

As part of their charitable giving, 20 food companies sponsored a local food bank. Each company donated 31 cans of food. About how many cans of food in total did the companies donate?

600

200

55,623 - 48,213 = ?

7,410

200

What is the estimated sum of 14,972 and 32,103 ?

47,000

200

250 x 4,000 = ?

1,000,000

200

112 x 32 x 17 = ?

60,928

200

When Albert went to bed, there were 263 gulls on the lake. That night, a flock of 446 geese joined them. About how many birds were on the lake when Albert woke up?

700

300

105,222 - 9,105 = ?

96,117

300

What is the estimated product of 12,871 and 213 ?

2,600,000

300

300 x 300 x 300 = ?

27,000,000

300

9 x 5 x 9 x 5 x 9 x 5 = ?

91,125

300

A new hospital ordered bandages for all of the doctors' offices. There are 27 bandages in each pack, and each box of bandages contains 33 packs. Each office gets 2 boxes, and there are 17 offices on each floor. How many bandages are there in all if the hospital has 5 floors?

151,470

400

2,915,246 - 875,127 = ?

2,040,119

400

What is 99,999 rounded to the nearest hundred ?

100,000

400

80,000 x 6,000 = ?

480,000,000

400

Which two of these numbers multiply to 19,295 ?

(18    34    227   85    50    21)

227 and 85

400

Each train car has 17 rows of seats. There are 5 seats in each row. How many seats are there in 3 trains if each one has 8 cars?

2,040

500

18,541,637 - 9,888,241 = ?

8,653,396

500

What is 5,672,351 rounded to the nearest million ?

6,000,000

500

20 x 20 x 20 x 20 x 20 = ?

3,200,000

500

Which two of these numbers multiply to 27,690 ?

(77   78   79   355   356)

78 and 355

500

The students at Paul's school collected magazines for recycling. Each student collected 13 stacks of magazines. There were 77 students participating, and they put 96 magazines in each stack. How many magazines did the school recycle?

96,096