4 m 3 m = () m 1 m 2 m 5 cm = () m 26。 Rewrite to two decimal places. 1 kg 250g = () kg 4 yuan zero five points = (). 27 yuan. Rewrite the following figures into "meters". 8 decimeters, 7 centimeters, 6 centimeters and 5 millimeters. 28. Rewrite the following figures to two decimal places. 9 yuan = () Yuan 7 jiao = (). 29 yuan. Rewrite the following numbers into numbers in yuan. 3 yuan is 2.4 minutes, 7.6 minutes and 30 minutes. Divide 1 m into 10 parts, each part is 1 m (), and write it as a fraction () and a decimal () m; Take seven of them and write a score of () meters. Written as a decimal is () meters. 3 1. Sort the following numbers from small to large. 0.7 0.705438+0.71.7 0.717.1_ _ _ _ _ _ _ _ _ _ _1and 7//. 2.20.523 The second digit to the left of the decimal point is (), which means () (); The second digit to the right of the decimal point is (), which means (). 3. Write down the following figures. 500.6 1 () 3.03 () 0.009 () 4, 12.356 pronounced (), 100.0 1 pronounced (), 0.305 pronounced (). 5. There is a number whose percentile and percentile are 9, and the rest of you are 9. 6. Add "0" or delete "0" in the decimal (), and the decimal () remains unchanged. 7. Take one thousandth as the counting unit, rewrite 0.92 as (), and keep one decimal place as (). 8. Fill in ○, ○ or =. 8 meters ○7.6 meters ○3.32 yuan ○4.78 kilometers ○ 0.564120.05 ○12.005 ○ 7.320 ○ 9. Expand by 0.32 to 10 times and 65438+ respectively. 10, move the decimal point of 12.5 to the left by 1 bit, and then move it to the right by 2 bits, and the number obtained is (). 1. Move the decimal point to (), and the original number will be enlarged by 10 times. 2. Move the decimal point () to (), and the original number will be reduced by 100 times. 3. Move the decimal point 20.5 two places to the left and one place to the right. The decimal point should be (). 4. Expand a decimal by 1000 times, and then reduce it by 10 times to get 24.9. This decimal was originally (). 5.9. 1 magnification 1000 times (), 5.74 reduction1000 times (). 6. Remove the decimal point 1.502, and its value is () times. 7. Arrange the following figures in descending order: 5.36 kg, 536 kg, 5 kg, 362 g, 5.3 kg () 8. Zoom in 6.7 times to 670. 9. Reducing () 10 times is 0.86. Fourth, do 1 to simplify the following decimals. 0.300 25.00 30.030 5.608 3.250 80.000 2. Rewrite the following decimals into two decimal places without changing the size of the numbers. 0.8 3.250010.5 23 75.8 3.500 3. Arrange the following decimals in descending order. 0.5 0.506 0.605 0.056 0.065 0.56 4. Fill in the appropriate decimal or integer. 25 cm = () m 3.52 yuan = () yuan () jiao () fen 8 kg 45 ton = () ton 4.05 kg = () g 7 square decimeter = () square meter 3.6 square decimeter = () square decimeter () square centimeter 5. Rewrite the following numbers into numbers in units of "ten thousand". 250000000 = 32500 = 47200000 tons = 2 100000 people =

6. Rewrite the following figures in units of "100 million" and then make them accurate to one place. 397000000000 38090000000 995000000 1 309000000 5. One-time use1,the price of a math book is 5.90 yuan, and you need to buy 10, 100 and/kloc-respectively. 2. A ship sails 300 nautical miles in 10 hour. According to this calculation, how many nautical miles can 1000 hour sail? 3. A bag of 100 kg sugar costs 5200 yuan. How much is sugar per kilogram? How much does it cost to buy 100 bag of such white sugar? The school held a 100 meter race. Xiaodong, Xiaoming, Xiaogang, Xiao Qiang and Xiaofeng scored 16.78 seconds, 17 .03 seconds, 17.55 seconds, 16.9 seconds and 17 respectively. Please line them up. 5. How many different decimals can be formed with digital cards 5, 0, 7 and decimal point "."? What's the biggest? What is the smallest? 6. According to the need, use the four numbers 0, 0, 3 and 8 and the decimal point to form decimals. (6 points) (1) constitutes the smallest decimal (). (2) Maximum score (). (3) Form the smallest two decimal places (). (4) Maximum score (). (5) Make up a two-digit decimal number that reads only 0 () (6) Make up a decimal number that doesn't read 0 () (1) 10 0. 1 Yes (), 10 0.0 1. (2) 0.6 is a decimal of (), which means () of (). 0.008 is a () decimal, which means () in (). 0. 15 is the decimal place of (), which means () of (). (3) The counting unit of 0.4 is (), and it has () such counting units. The counting unit of 0. 138 is (), and it has () such counting units. (4) The second digit to the left of the decimal point is (), its counting unit is (), the fourth digit is (), and its counting unit is (). The first digit to the right of the decimal point is (), its counting unit is (), and the counting unit of the third digit is (). 5.376 consists of () 1, () 0. 1, () 0.0 1 and 6 (). [6] In 4.04, the left 4 is at () position, which means (), and the right 4 is at () position, which means (). The left 4 is () times that of the right 4. Once there are () decimal places greater than 7 and less than 8. Write the following numbers: (8 points) 0.037 1, 002.055.894,058 Writing: 3. Read the following numbers: (8 points) 0.052 100.009 32.32 48.095 Reading: 4. True or false: (3 points) (1) There are countless decimals between 3 and 4. () (2) Add "0" or remove "0" after the decimal point, and the size of the decimal point remains unchanged. () (3) Add two "0s" at the end of 908, and the size of the number remains unchanged. (5) Write the meaning of the following decimals: (8 points) 83.6 yuan, 4.32 meters, 5.08 kilograms, 0.82 meters. The intransitive verbs are colored with the following decimals: (6 points) (0.4) (1.5) (0.06 meters) seven. Write down the decimal point indicated by the arrow. (8 points) 8. Without changing the size of the numbers, rewrite the following numbers to three decimal places:130.3000 452.1() () ix. Simplify the following figures: 120.000 4.0500 X. Arrange the following figures in descending order: (10) (1) 4.63 4.075 5.21(2) 7 yuan, 7.5 yuan 5.751. The results of several students in a short circuit competition are as follows: Xiao Dinggui 8.40 seconds, Jun Xiao 8.37 seconds, Xiao Dong 8.04 seconds and Xiao Qiang 8.34 seconds. Please press their scores. (10) 1. Fill in the blanks. (0.5 points for each space, * * 25 points) (1). In the decimal order table, the highest digit of the decimal part is (), its counting unit is (), the lowest digit of the integer part is (), and its counting unit is (). (2) The third digit to the right of the decimal point is (), its counting unit is (), the third digit to the left of the decimal point is (), and its counting unit is (). (3) The numeral combination () consisting of 1 10 and 2 0 1 means (). (4)3.544 consists of ()

One tenth, () one percent, () one percent, () one thousandth. (5) The number consisting of five hundred, two ones, seven tenths and six percent is (). It is () decimal (filled with pure decimal or with decimal). (6) () 0.2 is 2, 10 0.0 1 is (). (7) A 0.0 1 equal to 10 (), 1 contains () 0.00 1. (8) One digit after the decimal point means (), two digits after the decimal point means () and three digits after the decimal point means (). (9)0. 1 is 1, which is () times of 0.0 1. (10) One percent of 20 is one thousandth (), writing (). (1 1) (59%), (94%) and (0/00) 100. (12) Fill in the appropriate decimal places. 38 cm = () m m = () m 3 yuan 5 points = () yuan 6042 g = () kg (13) The integer part is 35 ones, and the decimal part is 35 thousandths. The number is (). (14) Fill in the appropriate decimals in the brackets below. 4.7 () () <19.07110.7 > () 2. True or false. (Mark "√" is right, mark "×" is wrong, * * 1 2 points) (1) Remove the "0" after the decimal point. Decimals are the same size. () (2) 1000 0.00 1 is 1. () (3) The more decimal places, the smaller. () (4) 0.5 = 0.50. But their counting units are different. () (5) If the decimal point is moved by three places, the original number will be enlarged by 1000 times. () (6) The highest digit of the decimal part is ten digits. () (7) Integer is greater than decimal. () (8) After a number is expanded 10 times, it is 0.9. It turns out that this number is 9. () (9) According to the nature of decimals, 80.600 can be written as 8.6. () (10) Move the decimal point by two places. The original figure has been enlarged by 100 times. () (1 1) Simplify 1.070 to 1.7. () (12) Rewriting 0.9 into three decimal places is 0.009. () Third, multiple-choice questions. 10 points) (1) Write the numbers of 5 meters and 3 centimeters in rice as (). ① 3.50m ② 5003m ③ 5.03m (2) After "0" is removed from the following figures, the size remains unchanged () ① 8. 10 ② 865438+. The number consisting of four percent and five thousandths is () 13.45 23.450 33.045 (4) First, expand 5.676 by 65,438+000 times. Reducing 10 times is (). ① 5.676 ② 576.6③ 56.76 (5) 6.3 contains the () name of 0.01.163 ② 630 ③ 6300 (6) units. It's called the same number. ① Different ② Same ③ Big ④ Small (7) 4. 106, the percentile number is () 142 130468 (8), the integer part is 0, and the largest digit number is ()10. First, expand a decimal by 10 times. The essence of further reducing 1000 times is to move the decimal point of this decimal point to (). ① Left ② Right ③②④34. Calculation and application (***37 points) 1, simplification of decimal point. (* * * 6 points). (1) 8.9060 = (.203.4600 = (3) 0.0074000 = (4) 0.807060 = (5) 6.060600 = (6) 9.400000 = 2. Fill in the appropriate numbers in the brackets. (65438+ 0 point * * * 6 points for each small question) 350g = () kg 840cm = () m 8.36m = () m () decimeter () cm 3m2 18 square decimeter = () m2.72 yuan = () yuan () jiao (). (* * 3 points)10.56×10 = 3.15×1000 = 0.10/×1000.

10 ÷100 = 360 ÷100×10 = 4. Fill in ">" and "

Remove the decimal point from the decimal place, and the number is (). (l) magnification 100 times; (2) Reduce 100 times; (3) reduce 100 times; 5. Add two zeros to the end of 9.5, and this number (). (1) Enlarge 100 times (2) Reduce 100 times (3) Keep the size unchanged. 6. Among the following figures, the number without "0" keeping the same size is (). (1) 400 (2) 4.04 (3) 4.400 7. (1) Can be removed (2) Can't be removed (3) Sometimes can be removed and sometimes can't go. The exact percentage of1.496 is () (1)1.5 (2)1.50 (3)1.4 (4)1.49. 4. add ">" in ○. (18) 7.5 yuan ○7 yuan ○ 08 02 02 04 0300 02 084 00125 00126 00 96706 96709 3.050.03.50 40./. They spent 8.30 points in group A, 8.09 points in group B and 0.38m in group C. The heights of the four students were 1.45m, 1.30m and 1.42m respectively. Xiaolan is known to be taller than Xiaoming, but shorter than Xiaoyun, and Xiaoqing is taller than Xiaoyun. Do you know the height of the four of them? Xiao Xin's father went on a business trip for seven days. When he got home, he tore up all the calendars for these seven days. It is known that the sum of these 7-day dates is 49. When will Xiao Xin's father come home? 4. Use the four numbers 0, 0, 2 and 6 and the decimal point to form a decimal point. (6 points) (1) constitutes the smallest decimal (). (2) Maximum score (). (3) Form the smallest two decimal places (). (4) Maximum score (). (5) Make up a two-digit decimal read-only 0 () (6) Make up a decimal that does not read 0 () 5 and (1) have three decimal places, and keep the integer 3 and one decimal place 3.00 by rounding. The minimum value of this three decimal places is () (2) There are two decimal places, and the approximate number of one decimal place is 8. 0, the maximum value of these two decimal places is (), and the minimum value is ().