2. If (five small squares) means "1", then (five small squares plus a triangle) is expressed as a fraction (1 1/2).
Add 40 to the denominator of 3.5/8, and add (25) to the numerator to keep the size of the score unchanged.
6. Build a 4-kilometer canal, which will be completed in 5 days, with an average of (4/5) kilometers per day, equivalent to 1 kilometer (4/5).
12. Divide the 5m-long rope into 8 segments, each segment is (5)/(8) meters long.
13. Divide 8 hectares of land into 15 parts, with each part being (115) and each part being (8/ 15) hectares.
14, and fill in the appropriate score in brackets.
7 cm =(7/ 100) m 35 cubic decimeter =(7/200) cubic meter.
53 seconds =(53/60) when 25 hectares =( 1/4) square kilometers.
15, 5/ 10, 3/ 10 and 5/8 are arranged in descending order as (3/ 10, 5/ 10, 5/8).
/kloc-class 0/6, class 6 (1) planted 56 trees, class 5 (1) planted 40 trees, class 6 (1) planted (7)/(5), class 5 (1).
17, a pile of coal is transported seven times on average, each time (1)/(7), five times (5)/(7).
18, Xiaohong walks from school to the library for 32 minutes, Xiaoqing walks from school to the library for 35 minutes, Xiaohong walks every minute (1 )/(32), and (Xiaoqing) walks more slowly.
19, a rice mill grinds 50 kilograms in 30 minutes, with an average of (5/3) kilograms per minute. According to this calculation, it takes (3/5) points to grind 1 kg rice.
20,20 = (400)/204 = 3 and (6)/6 7 and 1/3=6 and (4)/3=5 and (7)/3.
The decimal unit of 2 1, 3 3/7 is (1/7), and there are (24) such decimal units.
22.(8) 1/8 is 1, 12 1/5 is (12/5), and 1 has (10)/kloc.
23. Fill in the brackets with appropriate scores.
29: 00 =( 1740) 339: 00 =( 1 13/20)
1 19 square decimeter =( 1 19/ 100) square meter 3083 ml =(3083/ 1000) liter.
24. Master Wang processes 17 pieces in 5 minutes and 20 pieces in 6 minutes; Master Zhang processes 23 parts in 7 minutes. Master Wang is the most efficient.
25. fill in ○ >, < or =.
2/7 >2/9 5/8 >3/8 16/4 >34/53 1/5 & lt； 26/522/7 & lt； 3 1/8
26. The denominator is a, the maximum true score is (a- 1/a), and the minimum false score is (a/a).
27, the molecule is 10, the maximum true score is (9/ 10), and the minimum false score is (10/0).