Solve -2*0.01+(-1)*0.15+2*0.24+3*0.4+4*0.2

$$-2 \times 0.01+(-1) \times 0.15+2 \times 0.24+3 \times 0.4+4 \times 0.2$$

Evaluate

$$2.31$$

Solution Steps

Multiply -2 and 0.01 to get -0.02.

$$-0.02-0.15+2\times 0.24+3\times 0.4+4\times 0.2$$

Subtract 0.15 from -0.02 to get -0.17.

$$-0.17+2\times 0.24+3\times 0.4+4\times 0.2$$

Multiply 2 and 0.24 to get 0.48.

$$-0.17+0.48+3\times 0.4+4\times 0.2$$

Add -0.17 and 0.48 to get 0.31.

$$0.31+3\times 0.4+4\times 0.2$$

Multiply 3 and 0.4 to get 1.2.

$$0.31+1.2+4\times 0.2$$

Add 0.31 and 1.2 to get 1.51.

$$1.51+4\times 0.2$$

Multiply 4 and 0.2 to get 0.8.

$$1.51+0.8$$

Add 1.51 and 0.8 to get 2.31.

$$2.31$$

Factor

$$\frac{3 \cdot 7 \cdot 11}{2 ^ {2} \cdot 5 ^ {2}} = 2\frac{31}{100} = 2.31$$