31
x 7
---
__7
21 (The underscores are for formatting) The 7 should be aligned in a column to the right of 21
217
Or: 31 = 3x10 + 1 ---> 7 x (3x10 + 1) = 7x3x10 + 7x1 = 21x10 + 7 = 210 + 7 = 217
7 x 31
31 multiplied by 7 is 217
31
How about: 2*31 = 62
7 x 30 = 210
961
37 to base 8 is (24+7) = 31 in decimal 7 to base 8 is 7 in decimal Multiplying 31 by 7 = 217 in decimal and this is 331 in octal on base 8
15.50 * 31 = 480.5
7 multiplied by 5 is 35. 7 multiplied by 5 = 35
24 goes into 31 once with a remainder of 7. This can be calculated by dividing 31 by 24, which equals 1 with a remainder of 7. In other words, 24 multiplied by 1 is 24, and adding the remainder of 7 gives the original number 31.
7 multiplied by 7 is 49.
65 multiplied by 31 is 2,015.