2 More complex definitions of new operations

3 Cleverly calculate the score (1)

4 Clever calculation of scores (2)

Clever calculation of 5 points (3)

6 zoom method

7 valuation

Characteristics of eight-unit fraction

Split of 9 unit scores

10 Interchange of Fractions and Decimals (1)

1 1 Conversion between Fractions and Decimals (2)

12 decimal string

The sum of 13 fractional series

14 cross reduction

Simplification of 15 Complex Fraction

Application of 16 decimal system

17 1 1 multiple characteristics

18 number theory (1)

19 number theory (2)

20 plot ratio correspondence

2 1 conversion unit 1

22 Finding Invariants (1)

23 Looking for Invariants (2)

24 interest

25 the profit problem (a)

26 profit problem (2)

27 engineering problems

28 water pipe problem

29 cows eat grass (1)

30 cows eat grass (2)

3 1 The itinerary of multiple meetings.

32 Meeting and Pursuit

33 circular stroke

34 flow stroke

35 train crossing the bridge

36 clock face stroke

37 hounds chase rabbits.

38 concentration ratio (1)

39 concentration ratio (2)

Perimeter of 40 circle

A circle with an area of 4 1 (1)

42 Area of a circle (2)

43 Area of a circle (3)

44 cylinder

45 cone

46 cylinders and cones

The nature of the ratio of 47

48 proportional distribution

The basic nature of 49 proportion

50 (1)

Application of 5 1 ratio (2)

Solutions of 52 more complex column equations

application problem

53 indefinite equation

54 negative number

55 Statistics and Probability

56 inclusion and exclusion

57 Maximum and minimum values

58 at most and 58 at least.

59 logical reasoning

60 smart grid

Comprehensive test (1)

Comprehensive test (2)

Reference answer