2016年11月23日 · If, by chance, you are seeking the decimal representation of this fraction, you can convert easily by simply dividing 5 into 2: 2 ÷ 5 ⇔ 5)¯¯¯¯¯¯¯2.00 0.4 5)¯¯¯¯¯¯¯2.00 20 ¯¯¯ ¯ 0 2 5 in decimal form is 0.4, or 40%. (Example: scoring 2 out of 5 on a quiz is a score of 40%.)

2016年10月20日 · In 2 5 make the denominator 10 2 5 × 2 2 = 2 × 2 5 × 2 = 4 10 = 0.4 Note that 2 2 = 1 and multiplying any number by 1 does not change its value. However, some fractions have denominators which cannot be made into a power of 10. In that case, divide the numerator by the denominator to get a decimal. 2 5 = 2 ÷ 5 = 0.4

2016年6月30日 · To get 2 5 as a percent, we need the denominator to be 100. 2 5 2 ⋅ 20 5 ⋅ 20 40 100 Now that we have a denominator equal to 100, just look at the numerator and that's your percent. 40% To make this a decimal, take the percent value and move the decimal point left two times. 40 .40 .4 or 0.4

2018年2月4日 · There are infinitely many numbers which are equivalent to 2 5 2 5 represents a fraction of a whole. It can be expressed as a proper fraction, or a decimal or as a percent. 2 5 = 0.4 = 40% However 2 5 is the simplest form of many equivalent fraction. Recall that multiplying any number by 1 does not change its value.

2018年5月15日 · 0.4 To turn a fraction into a decimal, all you have to do is divide the top number by the bottom number. 2/5, which is the same as saying 2 -: 5, as a decimal is: 2/5 rarr 0.4

2016年5月14日 · 2/5 of 25 is 10 To multiply a fraction by a natural number you have to multiply the numerator by the number and leave the denominator unchanged: 2/5*25=(2*25)/5=50/5=10

2016年8月25日 · 4 There is a choice of methods.. Work smarter, not harder! One of the laws of indices deals with cases where there are powers and roots at the same time. x^(p/q) = rootq(x^p) = (rootq x)^p The denominator shows the root and the numerator gives the power. Note that the power can be inside or outside the root. I prefer to find the root first, and then raise to the …

2015年11月11日 · The key is to get the denominator as some multiple of 10, since then we can convert easily to decimal by just moving the decimal comma the appropriate number of places. In this case, easiest would be to convert it by multiplying top and bottom by 2. (Since we do the same to top and bottom, the value stays the same). ∴ 2 5 = 2 × 2 5 × 2 = 4 10 = 0,4

2015年6月30日 · The opposite of a number is its additive inverse, which when added to the original number the result is zero. 2 5 +(− 2 5) = 0 The reciprocal of a number is its multiplicative inverse, which when multiplied times the original number the result is …

2017年1月26日 · 1/4 Recall that: a^-b = 1/a^b and a^ (b/c) = root (c) (a^b) combined, it is a^ (-b/c) = 1/ (root (c) (a^b)) The above apply where defined. Therefore, 32^ (-2/5) = 1 ...