Multiplication
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48
Number of inches in a foot
12
9 + x = 40
x = 31
32 times 6
192
Number of days in a year
365 or 366
109 - x = 60
x = 49
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91
Number of centimeters in 10 meters
1,000
x + x + x = 150
x = 50
If a 30-story building has 36 windows on each floor, how many windows does it have?
108 windows
Number of seconds in an hour
3,600
10 cm
3x = x + 1
x = 1/2