-55
Any number that you like.
-55
Only once, because after that you do not have 60 to subtract from!
you would change hours to minutes. 1 hour=60 minutes
23
The difference between 275 and 215 is 60.
39
-46-60= -106
-60
7.6 * 60 = 456 minutes. We multipy by 60 because there are 60 minutes in an hour.
-55
One answer would be 0.There is a pattern of half the number and subtract 2. 4/2 - 2 = 0.
Only once, because after that you do not have 60 to subtract from!
you would change hours to minutes. 1 hour=60 minutes
54
23
21/60 - 1/15 = 17/60 To subtract fractions, make them have the same denominator (bottom number) by converting them to equivalent fractions (usually with the lowest common multiple of the denominators) and then subtract the numerators (top numbers). So for 21/60 - 1/15: lcm(15, 60) = 60: 21/60 = 21/60 1/15 = 4/60 ⇒ 21/60 - 1/15 = 21/60 - 4/60 = 17/60
The difference between 275 and 215 is 60.