The best estimate is, obviously, the exact value, which is 217557 since any other estimate will be inferior.
Since the operation is multiplication a workable estimate is obtained by rounding one number down and the other one up. This would give 3100*70 = 217000.
a baby
3 x 23 = 69
69 = 3 x 23
58,167
A reasonable estimate for 83*69 is 80*70 = 5600.The true figure, for comparison, is 5727.
210,000
69 multiplied by 21 is 1,449.
a baby
3 x 23 = 69
69 = 3 x 23
58,167
69 = 3 x 23
A reasonable estimate for 83*69 is 80*70 = 5600.The true figure, for comparison, is 5727.
1,932
Their product: 5451.
The answer will depend on what you wish to do with the estimate. If, for example, you wished to divide by 101, I would suggest leave it as it is because 1313/101 = 13. On the other hand, if multiplying by 69, I suggest a good estimate is 1300. Then 1313*69 is approximated by 1300*70 = 91000.
sexual intercourse is not involved in the 69, but for pleasure its ok...