There are three different math books, five different Chinese books and six different English books on the shelf.
(1) If you choose one of these books, how many different ways are there?
(2) If you take a math book, a Chinese book and an English book from these books, how many different ways are there?
(3) If you take two different subjects from these books, how many different ways are there?
There is a basketball game in our school. When we played, 10 players shook hands with each other once. How many times does a * * * shake hands?
Xiao Lin cooks for his family. He chooses vegetables for 5 minutes, washes rice for 2 minutes, cooks 15 minutes and cuts vegetables for 4 minutes. If there is only one single burner gas stove, how many minutes will it take to complete these things at least?
5 24 trucks can transport 192 tons of goods at a time. How many tons can the same truck transport at a time?
Master Zhang plans to process 552 pieces and 345 pieces in the first five days. According to this calculation, how many days will it take to process these parts?
7. Build a canal with a length of1944m, 12 days for 54 people to build it. If 18 people are added and the number of days is reduced to half of the original number, how many meters can the canal be built?
explain
11(6-5) = 10 (hours) A: B can catch up with A in10 hours.
2( 1)3+5+6= 14 (kinds of) answers. .
(2)3*5*6=90
(species)
3 * 5+3 * 6+5 * 6 = 63 species.
three
explain
9+8+7+6+5+4+3+2+ 1=45
four
Answer Xiaolin's first rice panning
2
Minutes, and then cook.
15
Minutes, when cooking, you can
Choose vegetables.
eight
Minutes, wash vegetables
five
Minutes, and then use
2
Cut the cauliflower in minutes and pick it for use after meals.
2
Cut the cauliflower in minutes and use it for cooking.
six
Minutes. A * * *
2+ 15+2+6=25
(minutes)
five
Number of answers:
192/24=8
(ton)
Total quantity:
8*36=288
(ton)
Comprehensive formula:
192/24*36=288
(ton)
six
explain
552-345=207
(1)
345/5=69
(1)
/
Day)
207/69=3
(Japan) A:
-
seven
explain
1944/54/ 12=3
rice
/
(people
*
Day)
54+ 18=72
(person)
12/2=6
(days)
3*72*6= 1296
(meter)