There are forty-five students in a class who took the final exam. After the results were announced, 10 students got full marks in mathematics, 3 students got full marks in mathematics and Chinese, and 29 students got no full marks in both subjects. So how many people got full marks in Chinese?
3.50 students stand in a row facing the teacher. The teacher asked everyone to press 1, 2,3, ..., 49,50 from left to right. Let the students who are calculated as multiples of 4 back off, and then let the students who are calculated as multiples of 6 back off. Q: How many students are facing the teacher now?
4. At the entertainment party, 100 students won lottery tickets with labels of 1 to 100 respectively. The rules for awarding prizes according to the tag number of lottery tickets are as follows: (1) If the tag number is a multiple of 2, issue 2 pencils; (2) If the tag number is a multiple of 3, 3 pencils will be awarded; (3) The tag number is not only a multiple of 2, but also a multiple of 3 to receive the prize repeatedly; (4) All other labels are awarded to 1 pencil. So how many prize pencils will the Recreation Club prepare for this activity?
5. There is a rope with a length of 180 cm. Make a mark every 3 cm and 4 cm from one end, and then cut it at the marked place. How many ropes were cut?
The fifth grade examination questions three answers
1, because both groups 10 participated, so five people only participated in mathematics, and eight people only participated in airplane models. Plus that 10 makes 23 people, and 40-23= 17, 17 both groups did not participate.
2. Similarly, the perfect score in mathematics is 10, and the perfect score in two subjects is 3, so the perfect score in mathematics is only 7, and 45-7-29=9. This is the person with full marks in Chinese (if it is only full marks in Chinese, you need to subtract 3).
3, 50 ÷ 4 is rounded to 12, and 50÷6 is rounded to 8, but it should be noted that the multiple of 4 may be a multiple of 6 at the same time, so the common multiple of 4 and 6 should be calculated, and 50 ÷12 (the least common multiple of 4 and 6) =4 (rounded).
4, 100 ÷ 2 = 50, 100 ÷ 3 = 33 (rounded), or calculate the common multiple of 2 and 3 100÷6= 16 (rounded), and then find out that it cannot be.
5, 180 ÷ 3 = 60, 180 ÷ 4 = 45, but two dashes may be drawn together to calculate their common multiple,180 ÷ 3 ÷ 4 =/kloc-0.
1. There are 40 students in a class, of which 15 is in the math group, 18 is in the model airplane group, and 10 is in both groups. So how many people don't participate in both groups?
There are forty-five students in a class who took the final exam. After the results were announced, 10 students got full marks in mathematics, 3 students got full marks in mathematics and Chinese, and 29 students got no full marks in both subjects. So how many people got full marks in Chinese?
3.50 students stand in a row facing the teacher. The teacher asked everyone to press 1, 2,3, ..., 49,50 from left to right. Let the students who are calculated as multiples of 4 back off, and then let the students who are calculated as multiples of 6 back off. Q: How many students are facing the teacher now?
4. At the entertainment party, 100 students won lottery tickets with labels of 1 to 100 respectively. The rules for awarding prizes according to the tag number of lottery tickets are as follows: (1) If the tag number is a multiple of 2, issue 2 pencils; (2) If the tag number is a multiple of 3, 3 pencils will be awarded; (3) The tag number is not only a multiple of 2, but also a multiple of 3 to receive the prize repeatedly; (4) All other labels are awarded to 1 pencil. So how many prize pencils will the Recreation Club prepare for this activity?
5. There is a rope with a length of 180 cm. Make a mark every 3 cm and 4 cm from one end, and then cut it at the marked place. How many ropes were cut?
The fifth grade examination questions three answers
1, because both groups 10 participated, so five people only participated in mathematics, and eight people only participated in airplane models. Plus that 10 makes 23 people, and 40-23= 17, 17 both groups did not participate.
2. Similarly, the perfect score in mathematics is 10, and the perfect score in two subjects is 3, so the perfect score in mathematics is only 7, and 45-7-29=9. This is the person with full marks in Chinese (if it is only full marks in Chinese, you need to subtract 3).
3, 50 ÷ 4 is rounded to 12, and 50÷6 is rounded to 8, but it should be noted that the multiple of 4 may be a multiple of 6 at the same time, so the common multiple of 4 and 6 should be calculated, and 50 ÷12 (the least common multiple of 4 and 6) =4 (rounded).
4, 100 ÷ 2 = 50, 100 ÷ 3 = 33 (rounded), or calculate the common multiple of 2 and 3 100÷6= 16 (rounded), and then find out that it cannot be.
5, 180 ÷ 3 = 60, 180 ÷ 4 = 45, but two dashes may be drawn together to calculate their common multiple,180 ÷ 3 ÷ 4 =/kloc-0.