五年级数学上册易错题答案Word文件下载.docx

1、 Five approach, the approximate value is 8.50, the three decimal places, the maximum may be （）, the smallest may be （）.3, known: 1 7=0.142857, then the repeating decimal decimal point behind the 170th the number is （）.4 and 0.7 of seven percent are （）.5, schools to buy football a yuan per game, each

2、 basketball less than football 5 yuan.A-5 means （）, 2a-5 means （）.6, two B multiplication product plus a （） is expressed with formula.7, 36 minutes = （） hours8, a Book 160 pages, Xiao Hong first read m page, second days from （） page to see.9, LAN read a 242 page story book, read m pages 5 days ago,

3、read the remaining 6 days, read on average every day.10, the number of male teachers in schools is 3.5 times that of female teachers, male teachers are 3 times more than female teachers, and 4 are male teachers.11, 8.25, = （） time （）12 and 7200 M2 = （） ha13, a parallelogram bottom is 7 decimeter hei

4、ght is 4 decimeters, if the bottom and expand 10 times, it expands the area of （） （） is times square decimeter.14, a bag of rice X kg, with a load of Y tons of trucks, a can transport （） bag.Two, judgment1, decimal divided by integer, quotient must be decimal. （）Three, select1, please select the app

5、ropriate conditions in the picture （V）, then calculate the answer column.A, B, two road repair teams at the same time repair a highway, and ask the armor team how many meters per day?（） （1） a highway 3750 meters long（b） （2） B team averages 85 meters per day（） （3） when finished, a team less than the

6、team B 500 meters（） （4） the two teams will be repaired together for 25 days2, between 0.5 and two, the decimal number has （） 0.6.A, 9 B, 10 C, countlessThe quotient of 3 and two numbers is 15, and the remainder is 2. If the divisor and divisor are expanded 100 times, the new quotient and remainder a

7、re （）.A, 15. 2, B, 15. 20, C, 15. 200, D, 1500. Two hundredFour, simple calculation32 x 1.25 x 2.5, 0.8 x 16.5 x 12.5, 0.125 * 32+5.280.32 x 9.9, 17.5 * 12.5-1.75 * 45+0.175 * 2000.85 x 0.5+0.25 x 0.3, 8.9 * 1.1+15.7 * 8.9+6.8 * 1.15.4 （0.27 x 4） 3.875 * 25.7+3.875 * 74.2+6.125 * 99.9Five, column ca

8、lculation1. Move a decimal point to the right one bit, 19.8 larger than the original number. What is the original decimal number?2. Move one decimal point to the left, 3.96 less than the original number. Whats the original decimal number?Six, solve the problem1, a kind of cotton cloth, 4.16 yuan per

9、 meter, buy 2.4 meters, how much should deal with?2, I and my mom and dad go to the Great Wall （fare 25.5 yuan per person, half price for children） round-trip transportation to many yuan?3. The product of the factor is retained to two decimal places. 5.40, please write its exact value. What is the p

10、ossible number? （limited to three decimal places）4, Xiao Ming 4 test average score of 78.5 points, he would like to next test, the average score increased to 80 points, then, in the fifth test, how many points did he get?5, the tortoise and the hare race, the whole journey 2000 meters, the tortoise

11、climbs 20 meters every minute, the rabbit runs 300 meters every minute. The Hare thought he could run fast and slept on the way. As a result, the hare was 20 meters from the finish line at the end of the tortoise. How many minutes did the rabbit sleep?6, Guangming primary school five or six students

12、, a total of 308 people to visit the museum, arranged in two columns, around two students are 0.5 meters away, the team walk 65 meters per minute. Now, how many minutes does it take to go through a 898.5 meter long bridge from the top of the bridge to the end of the bridge?7, a car from a to B, 3 ho

13、urs for 204 kilometers, the rest of the journey to the original speed for 2.5 hours, a and B both away is how many kilometers?Seven, outward bound trainingWhat is 1 and 10 / 7 of the 100th digits after the decimal point? How about 101st?2, a basket of apples, if sold at 1.6 yuan per kilogram, will l

14、ose 9 yuan; if you sell at 2.1 yuan per kilogram, it will earn 6 yuan. If you do not earn or lose, how much should you sell per kilogram?Equation element1, the number is 30, less than the number of B, B, B number is （）.2, a pile of sand x tons, is 7 times the pile of sand,There is a ton of sand in t

15、he B pile.3, if 36=, a +, a +, a = B +, B = C +, C +, C +, C, then a +, B +, C = （）4, compare the size of X and y.（1） x+1.5=y + 4.5, then x （） y.（2） x, -4.5=y, -1.5, then x （） y.5. Calculate the values of a and B based on the given equation.3.5A = 17.5 B, where a and B are two natural numbers that are not 0. What are the minimum numbers of a and B?6, a car S kilometers per hour, 4 hours after the remaining a km, th