Issolvi 0.8*4-0.75:0.25+1.5*0.2-0.4:2

$$0.8 \times 4 - 0.75 : 0.25 + 1.5 \times 0.2 - 0.4 : 2$$

Evalwa

$$0.3$$

Passi tas-Soluzzjonijiet

Immultiplika 0.8 u 4 biex tikseb 3.2.

$$3.2-\frac{0.75}{0.25}+1.5\times 0.2-\frac{0.4}{2}$$

Espandi \frac{0.75}{0.25} billi timmultiplika kemm in-numeratur kif ukoll id-denominatur b'100.

$$3.2-\frac{75}{25}+1.5\times 0.2-\frac{0.4}{2}$$

Iddividi 75 b'25 biex tikseb3.

$$3.2-3+1.5\times 0.2-\frac{0.4}{2}$$

Naqqas 3 minn 3.2 biex tikseb 0.2.

$$0.2+1.5\times 0.2-\frac{0.4}{2}$$

Immultiplika 1.5 u 0.2 biex tikseb 0.3.

$$0.2+0.3-\frac{0.4}{2}$$

Żid 0.2 u 0.3 biex tikseb 0.5.

$$0.5-\frac{0.4}{2}$$

Espandi \frac{0.4}{2} billi timmultiplika kemm in-numeratur kif ukoll id-denominatur b'10.

$$0.5-\frac{4}{20}$$

Naqqas il-frazzjoni \frac{4}{20} għat-termini l-aktar baxxi billi testratta u tikkanċella barra 4.

$$0.5-\frac{1}{5}$$

Ikkonverti n-numru deċimali 0.5 fi frazzjoni \frac{5}{10}. Naqqas il-frazzjoni \frac{5}{10} għat-termini l-aktar baxxi billi testratta u tikkanċella barra 5.

$$\frac{1}{2}-\frac{1}{5}$$

L-inqas multipli komuni ta' 2 u 5 huwa 10. Ikkonverti \frac{1}{2} u \frac{1}{5} fi frazzjonijiet bid-denominatur 10.

$$\frac{5}{10}-\frac{2}{10}$$

Billi \frac{5}{10} u \frac{2}{10} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

$$\frac{5-2}{10}$$

Naqqas 2 minn 5 biex tikseb 3.

$$\frac{3}{10}$$

Fattur

$$\frac{3}{2 \cdot 5} = 0.3$$