we have to find compatible numbers
Estimate 4883 by 7 and the division problem solved we get 697.57.
18.9/7
21.5238
first you would have to estimate the division problem once you do that just move your decimal 2 spaces to the right for example if you have four eighths you would round four to five and eight to ten and then you divide
67.125
Estimate 4883 by 7 and the division problem solved we get 697.57.
For multiplication or division, the only reasonable estimate is -2.
Either or both.
18.9/7
An estimate is related to a number, not an arithmetic operation. Having said that, the estimate MUST take account of the context of the operations (+-*/).
For multiplication or division it is 0.5For addition or subtraction it depends on the other term(s). If adding to 1234 I would estimate 0.457 as 0 but if adding to 0.0000035 I would estimate it as 0.46
For addition or subtraction, 1 but for multiplication or division, 1.25
Anything divided by itself equals 1.
For multiplication or division, 133.33... or 100*4/3
To check if a division answer is correct, you can multiply the quotient (the result of the division) by the divisor (the number you divided by). If the product equals the original dividend (the number being divided), then the division answer is correct. Additionally, you can estimate by rounding the numbers to see if the quotient falls within a reasonable range.
21.5238
The word estimate is for a number, irrespective of the arithmetical operation involved. However, how you estimate for a number DOES depend on the operation. For example, if adding (or subtracting) 0.00496 form 123456, I would estimate 0.0049 as 0. But, it multiplying or dividing I would estimate it as 0.005 - it all depends on the context of the arithmetic operation.