25
50 - 25 = 25
9800 The LCM of 25 & 40 is 200, so need the largest multiple of 200 less than 10000. 10000 ÷ 200 = 50 so 49 x 200 = 9800 is the largest 4 digit number divisible by both 25 and 40.
15, 25, 45 15, 25, 75 25, 45, 75
10 + 15 = 25. the tens digit of 25 is 2
5
50 - 25 = 25
25
50 - 25 = 25
Subtract 25 from 50.
no
10, 20, 25, 50
10, 20, 25, 50
5
25
900
900