:work out an estimate to these calculations

1) 4.34×2.8 / 2

2) 91.2-72.4 / 17

3) 99.83×4.7 / 9

6 , 1, 50

Step-by-step explanation:

1) 4 * 3 /2 = 6

2) (90 - 70) / 20 = 1

3) 100 * 5 / 10 = 50

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents