Examination questions of mathematics competition in the third grade of primary school (time: 90 minutes) 1. I'll just fill in (22 points, each box 1 minute) 1, opposite to () in the east and () in the north. 2. This year is () year (flat year or leap year), * * * has () days, that is, () weeks, more than () days. 3. The total land area of China is about () square kilometers. 4, 7 decimeters is meters, written as a decimal is () meters. 5. The two integers adjacent to 76 are () and (). 6. This square land with a side length of () meters covers an area of 10000 square meters, that is, () hectares. Side length 1000 m, area () square kilometers, that is, () hectares of square land. 7. In a day, the hour hand on the clock has just gone () laps, ***24 hours. 24 o'clock is also the next day (). 8.T42 train 17:48 departs from Xi and arrives in Beijing at 7:23 the next day. The running time is (). 9. The area of the handkerchief is 4 (), and the decimal is () square meters. 10. What can I put in the brackets below? () × 69 ~ 560019 × () ~ 600 Second, please judge as a "little doctor", tick "√" for the right and "×" for the wrong. (5 points, 65438+ 0 point for each question) 1, and a square with a side length of 4 decimeters has the same perimeter and area. () 2. Maps are usually drawn in the directions of upper north, lower south, Zuo Dong and right west. () 3. The propulsion rate between two adjacent common area units is 100. () 4, divide 0 by any number to get 0. () There is only 8.5 as a decimal between 5, 8.4 and 8.6. () Third, choose the serial number of the correct answer and fill in (). I'm sure you'll be fine. (5 points, each question 1 minute) 1 and the highest rank of 364÷4 quotient is (). [ 100，2， 13 ]2。 2008 is () year, and 20 18 is () year. 【 ① Normal year ② Leap year ③ None 】 3. The 3004×50 product has () zeros in the middle and () zeros at the end. [122 133] 4. When a number is divided by 7, the quotient is greater than 79, and this number is (). [①55 1 ②557 ③556 ]5. A blue whale weighs about 25 elephants, a blue whale weighs three times as much as a humpback whale, an elephant weighs 6 tons, and a humpback whale weighs (). [① 25× 6× 3 ② 225 ÷ (6× 3) ③ 25× 6 ÷ 3] IV. Compare the sizes, and fill in "﹤, ﹤ or =" in each space (5 points, 1 minute. ) 1.9 decimeter ○2.0 1 decimeter ○ 0.2 meter ○0.07 meter ○ 80 square centimeters ○5 square centimeters ○200 square centimeters ○ 1000 hectares ○2 square kilometers ○ 5. As long as you are careful, you can do all the calculations correctly. (25 points) 1, oral calculation (10, 0.5 point for each small question) 30× 50 800× 200 2100 ÷ 3025× 4-14× 4 25× 4/. +09 0.6+1.450 ÷ 25 4500 ÷ 3001.15-0.161+1/kloc- * * * 1 1) 1833 ÷ 4 2420 ÷ 3 33.4+0.8

④ 8-7.23 ⑤ 44× 59 ⑤ 860× 13 VI。 Apply what you have learned and solve problems. (38 points, 1-5, 4 points, 6-8, 6 points) 1. The following is the water consumption statistics of Mr. Li's home in1-May. Answer the questions according to the statistics. (4 points: ① 0.5 points per empty space, ②-④ 1 minute per empty space) 1, the average water consumption in February, March, April and May is 6 tons, 8 tons, 7 tons, 9 tons and 10 tons respectively. (1) () uses the most water, and () uses the least. The water consumption in February is () tons less than that in May. (3) What is the average water consumption in these five months? Work it out and fill it in the statistical table. (4) You predict that the water consumption of Miss Li's house in June will be () tons. There are 80 tons of wheat on a rectangular land 800 meters long and 500 meters wide. How many tons of wheat are harvested per hectare? 3. The perimeters of a square and a rectangle are equal. This rectangle is 35 meters long and 25 meters wide. What is their field? 4. Xiaohua arrives at school at 7: 30 every morning, comes home from school at 1 1: 50, arrives at school at 2 pm, and comes home from school at 16. How long does he stay at school all day? 5, 5 boxes of bees can brew 375 kilograms of honey a year. According to this calculation, how much honey can 24 boxes of bees brew a year? 6. Dongdong and Liangliang each brought some colored balls to celebrate the June 1st party. Red, green, yellow, pink, purple and black with bright red, brown, blue, yellow and green in winter (1). How many kinds of colored balls did both of them bring? (2) How many balls of different colors did two people bring? 7. Last semester, Li Ming scored 92 in Chinese, mathematics and foreign languages, including 94 in Chinese and mathematics. How many points did he get in the foreign language exam? 8. Pour water into an empty bottle with a cup. If you pour 2 glasses of water, the bottle will weigh 200 grams. If you pour 5 glasses of water, the bottle will weigh 380 grams. Calculation: How much does a glass of water and an empty bottle weigh?