First, pay attention to examination and be careful. (40 points)
1, write directly. (4 points)
0.63×2= 4.8÷0.6= 1.7+3= 4×9×0.25=
1.25× 16= 9.6÷32= 2-0.09= 8.5-0.24- 1.76=
2, column vertical calculation and checking calculation. (6 points)
2.04×8.5= 4.692÷0.46=
3. Solve the equation. (6 points)
22.5×2+5x = 135 6x- 1.5x = 3.6+2。
4. Calculate the following questions, and use simple methods to calculate those that are easy to calculate. (18)
7.4×9.8- 14.5 13.4+5.62+ 17.6+4.38
6.73×4.8+5.2×6.73 8.4÷0.6+8.4÷0.4
(9.6+ 1.48÷3.7) ÷8 5.8÷[4×( 1.34-0. 14)]
5. Calculate the following questions continuously. (6 points)
① One factor is 2.8, the product is 19.6, and what is the other factor greater than 0.57?
②6.04 is a number less than twice 8.36. What's this number?
Second, if you think hard, you can fill it out. (18)
1. Fill in the appropriate numbers in the brackets below.
1.02km = () m 7.8m2 = () m 2 () m 2。
3100g = () kg = 5 tons 40kg.
2. fill in ">", "
12.3×0.75○ 12.3 0.56÷0.4○0.56
0.95○0.95× 1.87 4.8× 100○48÷0.0 1
3. Add brackets to the following formula as required: divide first, then add, and finally multiply by: 0.8× 1.2+ 12.9 ÷ 3.
4. According to 237×29=6873, write the results of the following questions directly:
2.37×29= 23.7×2.9=
2.37×290= 68.73÷23.7=
There is a football in the school, volleyball is five more than football, and the number of basketball is b times that of volleyball. basketball
There is ().
6. The parallelogram has an area of 2.4 square decimeters, a base of 20 centimeters and a height of ().
When the quotient of 7.0.85÷0.2 is 4, the remainder is ().
8. When two numbers are divided, the quotient is 5.4. If the dividend is enlarged by 10 times and the divisor is reduced by 10 times, the quotient is
( )。
9. Two decimal places, and the reserved integer is 6. The original maximum value of this decimal is ().
Third, carefully scrutinize and make judgments. (4 points)
1、0. 18×2.5÷0. 18×2.5= 1 …………………………………………… ( )
2, 8.39÷2 and 8.39×0.5 all represent half of 8.39. ………………………… ( )
3. When a number that is not equal to 0 is divided by the decimal, the quotient must be greater than the dividend. …………… ( )
4.A > B > C, the average of these three numbers is 1.76, so it is 1.76.
Fourth, compare repeatedly and choose carefully. (4 points)
1, 2.396 The two decimal places reserved are ().
A: 2.39 B: 2.4 C: 2.40
A bottle of oil weighs 2.7 kilograms. After pouring out half, the bottle weighs 1.45 kg, and there is () kg of oil in the bottle.
A: 2.3 B: 2.5 C: 2.6
3. After removing a decimal point, it is 39.6 larger than the original number, and this decimal point is ().
A: 3.96 B: 3.6 C: 4.4
4. Look at the formula, find the law and find the answer.
3×6= 18 33×66=2 178 333×666=22 1778
3333×6666=222 17778 …… 33…3×66…6=( )
Twenty three dollars and twenty six dollars.
A: 22…2 177…78 b: 22…2 177…78 c: 22…2 177…78.
20 20 7 19 2 19 7 18 2 18 7
Six, contact with reality, solve the problem. (28 points)
1, 2.3 yuan per catty of rice. Dad bought 25 kilograms of rice and paid 100 yuan. How much did he get back?
2. The construction project of Nanjing Metro 1 Line has completed an investment of about 654.38+58 million yuan this year, and the total investment to be made is about 590 million yuan less than this year. How many billion yuan do you need to invest?
4. Xiaohua walked three times on the 60-meter track, the first time with 1 19, the second with 1 18 and the third with 123. What is the average stride of floret? He walked 1500 steps from home to school. How far is it from home to school?
5. After entering the winter, the school electricity consumption has increased greatly. The electricity consumption in 165438+ 10 is 400 kwh more than that in 65438+ 10, and that in 65438+February is 2000 kwh more than that in 165438+ 10/0, 65438+. 1 1 What is the monthly electricity consumption?
(Equation solving)
6. Two cars, A and B, left Shanghai and Nanjing at the same time. 3. After1hour, Party A will meet Party B at a point outside the midpoint 12.4 km. The speed of car A is 54 kilometers per hour, and how many kilometers per hour is car B?