1, calculation: 270 16 2, calculation: 23,3× 3× 2×1=18 (pieces)
4. Solution: The number of saw segments is 2×2×2=8 segments.
Saw times 8- 1=7 times.
A * * * takes 5×7=35 minutes.
A: A * * * got 35 points.
5.180 ÷ 3+180 ÷ 4—180 ÷ (3× 4) = 90 (segment)
the next day
1、438 2、 1035
3、
[Resolution]: It is known that there are 196 lathes in two groups, and 16 lathes in group A are assigned to group B, and the number of lathes in the two groups is equal. As can be seen from the figure, group A is 32 more than group B (16× 2 = 32). Knowing the sum and difference of the number of lathes in two groups, we can find out the number of lathes in each group.
Solution: Group B has a lathe: (196- 16×2)÷2=82 (department)
Group A has lathes: 82+16× 2 =114 (partial) or196-82 =114.
A: group a has 1 14 lathe, and group b has 82 lathe. ..
4. First of all, we should understand the meaning of "three points backward". "Three points backwards" means that if you answer a wrong question, you will be deducted not only 5 points, but also 3 points, so every time you answer a wrong question, you will be deducted 5+3=8 points.
Solution: (1) How many points can a * * * get if it is all right?
5×20= 100 (minutes)
(2) How many points was Liu Dongyi * * * deducted?
100-52=48 (point)
(3) How many points will be deducted for each wrong question?
5+3=8 (point)
(4) How many questions did Dong Liu do wrong?
48÷8=6 (Dao)
First, multiple-choice questions (the number of correct answers in brackets) (2 points for each small question, ***20 points)
1. The thickness of the ruler is about 2( C).
A: decimeter b: centimeter c: millimeter d: kilometer
2. In the picture below, (b) is not a quadrilateral.
A: rectangle b: triangle c: square d: parallelogram
3. The following formula is correct (D)
a:56÷6 = 8……8 B:8-8×0 = 0 C:250×4 = 100D:4×205 = 820
Xiaowen walks 957 meters to school every day, Xiaogang walks 1205 meters to school every day, and Xiaogang walks (a) meters more than Xiaowen.
A: 248B: 258BC: 358BD: 2 162
5. In the picture below, (b) is a parallelogram.
:D:
6. Estimate the calculation result of 478+379, and the following statement is correct: (c).
A: Their sum is greater than1000; B: Their sum is less than 700;
C: 478 is less than 500, 379 is less than 400, and the sum of them is definitely less than 900; D: None of the above statements are correct.
7. One carton can hold 9 bottles of grapefruit honey, and 50 bottles of grapefruit honey need at least (b) cartons.
A: 5 B: 6 C: 4 D: 7
8. A grasshopper with a length of 5 cm can jump 75 times its length at a time, so the distance that the grasshopper can jump at a time is (A).
A: 375cm B: 80cm C: 70cm D: 75cm.
9. A birthday cake, Xiaohua ate the cake, his mother ate the cake, his father ate as much as his mother, and three people ate the birthday cake (C).
:D:
10. At the Guangzhou Asian Games on 16, China athlete Liu Xiang won the 1 10 hurdles championship with a score of 13( D )09, and won the gold medal in the Asian Games for three consecutive times.
A: Day B: Hour C: Minute D: Second
Two. Fill in the blanks (***20 points)
1 1. Color according to the score first, and then compare the sizes of the two scores. (4 points)
& lt& gt
12. Fill in the appropriate number in ○. (4 points)
4000 meters =( 4) kilometers 7 minutes =( 420) seconds.
7 tons = 7000 kg 50 cm = 5 decimeters.
13. put ">" in □ "<; Or "=". (2 points)
3 o'clock = 180 minutes 30 mm
14. Fill in the appropriate units of measurement. (2 points)
(1) Guangzhou Metro Line 3 can travel about 120 (km) per hour after the speed increase.
(2) The animals in the world are blue whales, and the weight of an adult blue whale can reach 80 (tons).
15. At the beginning of school, Xinxin took 50 yuan to the book shopping center to help her classmates buy exercise books. She spent 8 yuan to buy 1 copy of synchronous training and passed the test. With this money, she can buy at most (6) copies, leaving (2) yuan. (2 points)
16. A triangle, the lengths of three sides are 16 cm, 25 cm and 24 cm respectively, and the circumference of this triangle is (65cm) cm. (2 points)
17. Divide a rectangular piece of paper into 6 pieces and take 3 pieces. These three pieces belong to this rectangular piece of paper, and there are (3) pieces in it. (2 points)
18. During the summer vacation, Xiaohong and her mother flew to Shanghai to visit the World Expo Park. Due to the weather, the flight scheduled for 10: 05 had to be postponed to 10: 50, so the flight was delayed for (45) minutes. (2 points)
Iii. Answering questions (***60 points)
19. Write directly. (65438+ 0 point for each small question, ***8 points)
72÷9=8 500×6=3000 0×27=0 56÷6=9…2
105×2=2 10 - = 28÷5=5…3 + = 1
20. Use vertical calculation. (4 points for each small question, *** 16 points)
(1)382+ 156=538 (2) Calculate manually first, and then check 1706-624= 1082.
(vertical abbreviation) (vertical abbreviation)
(3)480×3= 1440 (4)69÷7=9…6
(vertical abbreviation) (vertical abbreviation)
2 1. Drawing problem. (2 points)
Draw a parallelogram in the box below.
(The answer is abbreviated)
22. Calculate the circumference (unit: cm) of the following picture (4 points).
( 1) 7 (2) 5
(3+7) × 2 = 20cm, 5× 4 = 20cm.
23. The newly-built Guang Zhouta is the TV tower in the world at present. It is 6 10 meter high, which is 205 meters higher than Beijing Central Radio and Television Tower. How high is Beijing Central Radio and Television Tower? (6 points)
6 10-205=405 (m)
Beijing Central Radio and Television Tower is 405 meters high.
24. The average speed of high-speed rail from Wuhan to Guangzhou can reach 34 1 km. If a high-speed train leaves Guangzhou at 7: 00 a.m. and arrives in Wuhan at 10 a.m., how many kilometers will it travel? (6 points)
It takes 3 hours from 7 am to 10.
34 1×3= 1023 (km)
A: About 1023 km.
25. Each car of Guangzhou Metro Line 3 can carry 225 passengers, so how many passengers can a * * * 6 car carry? (6 points)
225×6= 1350 (person)
A: One of the six carriages can carry 1350 passengers.
26. A glass of milk, the first time, the second time, how many points are left? (6 points)
1- - =
A: Anything else to drink?
27. The calligraphy teacher assigned Xiao Min the task of writing 168 Chinese characters a week. In the first six days, Xiao Min wrote 25 words every day. How many words does it take to complete the task assigned by the teacher on the seventh day? (6 points)
168-25×6= 18 (pieces)
A: On the seventh day, you should write 18 to complete the task assigned by the teacher.
Fourth, use your head. ※
28.4, 0,9, 1 four numbers can form (18) different four numbers.
29. Put a rectangle with six squares and a side length of 2 cm. Among these rectangles, the smallest circumference is 20 cm.