The closest estimate is the exact value.39*2 = (40 - 1)*2 = 80 - 2 = 78Then 39*22 = 39*2*11 = 78*11 = 858[Multiplication by 11 give the digits 7, 7+8 and 8 - with the carry overs applied to the answer.]
To estimate 467.6 multiplied by 8, you can round each number to make the calculation easier. Rounding 467.6 to 470 and 8 to 10, you can multiply these rounded numbers (470 x 10) to get an estimated product of 4700. This estimation provides a quick approximation of the actual product without the need for precise calculations.
Product of 22 percent of some number is 0.22 * the number.
22 = 2 x 11
To round to estimate the product of 38 x 2, you first round each number to a more manageable value. In this case, you can round 38 to 40 and 2 to 0. Then, multiply the rounded numbers together to get an estimate of the product. In this case, 40 x 0 = 0. So, the estimated product of 38 x 2 is 0.
The answer is 8.
underestimate
20 x 8 = 160
8 x 6000 = 48000
1/5 x 8/9
22
80 x 8000 = 640000
About 25.3 miles per hour. A good estimate is to multiply your total knots by 1.15 (representing miles) your product is an estimated answer.
Let x = the number 8x - 10 = 22
There is no best estimate (other than the exact answer) since more effort will always produce a better estimate.25*32 = 25*4*8 = 100*8 = 800.
This is how I approximate the product: 32 * 8 = 30*8 + 2*8 = 10(3*8) + 16 = 10(24) + 16 = 240 + 16 = 256.
32.