Virtual currency off shelves

1. 9/10÷3=9÷3÷10=3÷10=3/10=0.3
9/10÷3=0.9÷3=0.3
9/10÷3=9/10×1/3=3/10=0.3

2. Off form calculation 9 / 10 × 2 / 3
problem solving ideas: four operation rules (calculation in order, multiplication and division first, addition and subtraction second, bracket first, and power first) that is, disjunction operation (recursive equation calculation) should be carried out under the premise of this principle

problem solving process:
9 / 10 × 2 / 3

= 18 / 30

= 3 / 5

extended data ← rection result: the basis of judging whether a score is the simplest score can be based on whether the common factor of the numerator denominator is only 1, if only 1, the score is the simplest score, otherwise it is not the simplest score; If the numerator and denominator save the decimal number, you can first make the whole number and then judge the problem-solving process:
because the common factor of numerator and denominator is [1,2,3,6]

18 / 30: the simplest score is 3 / 5

if you have any doubt, please ask and adopt it if you are satisfied

3. zero point three three three three

4. 3 divided by 9 out of 10 x 10 out of 9 =? Calculation by recursive equation:
3 divided by 9 / 10 x 10 / 9
= 10 / 10 x 9 / 3
= 10 / 10 x 9 / 3
= 100 / 27

5. 3/10 × 9 is 27 / 10
27 / 10 + 3 / 10 is equal to 30 / 10. That's three.

6. The original formula
= 9 / 10 × 3/5
=27/50

7. When 9 / 10 and 2 / 3 are divided together, we must first find out the least common multiple of 10 and 3, that is 30, then 9 / 10 = 27 / 30, 2 / 3 = 20 / 30

8. 9 / 10 * 3 / 5
= 27 / 50