14 x 0.5 = 7
3000 x 20 = 60000
50 x 600 = 30000
81.9 * 4.6 = 80*4.5 = 40*9 = 360Exact answer is 376.74
If you don't replace the cards then it's: (4/52 x 3/51 x 2/50 x 1/49) Couldn't be bothered working it out
50 x 50=2500
989 x 5 = 4945
989 = 23 x 43
1978
x = -51 -x = 51
To find 10 percent of a number, multiply the number by 0.1. In this instance, 0.1 x 989 = 98.9. Therefore, 10 percent of 989 is equal to 98.9.
Best estimate is 20 x 40 = 800 Actual answer is 22 x 39 = 858
A reasonable estimate might be 6000 x 90 = 540000
1 x 51, 3 x 17, 17 x 3, 51 x 1
1 x 51, 3 x 17, 17 x 3, 51 x 1 = 51
1 x 51, 3 x 17, 17 x 3, 51 x 1 = 51
51 - x = 24 Add 'x' to both sides 51 -x + x = 24 + x -x + x = 0 Hence 51 = 24 + x Subtract 24 from both sides 51 - 24 = 24 - 24 + x 24 - 24 = 0 51 - 24 = x x = 27