The first question (1)-27; (2) 16, (3)2.89(4) minus 27.64 (5) 8: (6)36

The second question is 429981696; (2) 1 1255088 1(3)360.944 128(4)-95443.993

Question 3 (1)9(2)-27 and one seventh (3)-572(4)-968(5)-8(6)-35.93

The fourth question (1) 23500000 = 2.35 *10 to the eighth power (2)188520000 =1.885 *10.

(3) 7010000000 = 7.01*10 to the eleventh power (4)-3800000000 =-3.8 *10 to the seventh power.

The fifth question is (1) 300000 (2)1300 (3) 8050000 (4) 200400 (5)-19600.

The sixth question is (1) 0.0036 (2) 566 (3) 3.90 (4) 0.057.

Solution 7: The number whose square equals 9 is plus or minus 3, and the number whose cube equals 27 is 3.

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