Question

22. Выполните указанные действия: 1) (-30.5) - (-0.02) · (-1000) 2) (−0.9) · (-3) · (–²²/1) 3)(-45%). 39. (-) 1 13 4)(-4.05) ÷ (-2¹) ÷ (-0.02) · (−0.01) 5)(−7.5) ÷ (-0.15) + (-0.02) - (-0.001) . 6)(-2)+(-3) 2-0.875 + (-0.01) 20​

Answer 1

1) (-30.5) - (-0.02) · (-1000) = -30.5 - 0.02 * (-1000) = -30.5 + 20 = -10.5

2) (−0.9) · (-3) · (–²²/1) = -0.9 * -3 * (-22) = 2.7 * (-22) = -59.4

3) (-45%) = -0.45

4) (-4.05) ÷ (-2¹) ÷ (-0.02) · (−0.01) = -4.05 ÷ (-2) ÷ (-0.02) · (−0.01) = 2.025 ÷ (-0.02) · (−0.01) = -101.25

5) (−7.5) ÷ (-0.15) + (-0.02) - (-0.001) = 50 + (-0.02) - (-0.001) = 50 - 0.018 = 49.982

6) (-2) + (-3) + 2 - 0.875 + (-0.01) + 20 = -3 - 0.875 - 0.01 + 20 = 16.115

Ответ:

1) -10.5

2) -59.4

3) -0.45

4) -101.25

5) 49.982

6) 16.115