4
40 millimeters is 4 centimeters.
4 +30=40
40/10 = 4
40
exactly 4 (160/40 = 4)
There are 40 of them because 40/10 = 4
40 goes into 160 4 times.
40
There are 4 because 40 times 10 = 400
There are 4 quarts in a gallon, therefore there are 4 * 40 = 160 quarts in 40 gallons.
3 with 4 remaining 40 - 4 = 36 = 12 x 3