Mental Math
34x10
340
700-322=
378
33x72=
2,376
32/5
6 r2
The perimeter of a square with the length of 12
48
37x 1,000=
37,000
80,000-9,8988=
71,012
45x67=
3,015
29/4=
7 r1
Area of a rectangle with the length of 10 and the width of 16
160
400x30=
12,000
There are 300 people in the theater. 177 of the people had popcorn and the rest had chips. How many people ate chips?
123
There are 38 kids in the hallway. There are 7 times as many kids in the gym. How many kids are in the gym?
266
73/8=
9 r1
The area of a square with a length of 35
1,225
200x800=
160,000
300,000-289,999=
10,001
1,494
324/3=
108
The perimeter of a rectangle is 80. The width is 10. What is the length?
30
2500/10=
250
10,099,040-222,222=
9,876,818
88x98=
8,624
648/5=
129 r3
The area of a rectangle is 72. The width is 9. What is the length?