1.0016339
70
Use a factor tree. 70 Divide by two. 35,2 Divide by five. 7,5,2 Stop. All the factors are prime. 2 x 5 x 7 = 70
0.1286
Divide 70 by 5.
900
40
98
60r1
five tenths of 70 = 70 x 5/10 which is the same as 70 x 1/2 Then you turn the times to a divide and divide it by the reciprocal of 1/2 which makes 70 / 2 which is 35!
The largest number that will divide into 28 42 and 70 with no remainder is 14.
2.264 to 4 significant figures