2.1 21 Evaluate each of the following without the use of a calculator. Write down the answer in the simplest form and in positive exponents where applicable. All necessary calculations have to be shown marks will NOT be awarded for simply writing the answer, even if the answer is correct. 2.1.1 10 (24-6)+ x6 (-1-(-2))x 2.1.2 (2)x(2) 2 32 (3) (3) 35 x 105 x 25 2.1.3 57x65 (3) 2.2 Convert each of the following decimals to simplified fractions: 2.2.1 25.25 (2) 2.2.2 1.0002 (2) 2.3 Write each of the following numbers in scientific notation: 2.3.1 2.3.2 5000 25.489 (2) (2) 2.4 An encyclopaedia salesperson earns a straight commission of 3.5% on the gross sales value of volumes sold. What gross value (to the nearest R) would have to be sold in order for the salesperson to earn R100? (3) 2.1 Evaluate each of the following without the use of a calculator. Show all working (steps). Write down the answer in the simplest form and in positive exponents where applicable. 2.1.1 10 (24-6)+ + (126) (-1-(-2)) * (32 1 2.1.2 2*-* 8 10 (2) (2) 2.1.3 (5)' x 5' x(5) (2) 2.2 Convert each of the following decimals to simplified fractions: 2.2.1 0.256 2.2.2 0.895 (2) 22 (2) 2.3 Write each of the following numbers in scientific notation: 2.3.1 245000 (2) 2.3.2 1.325 (2) 2.3.3 0.00043 (2)