1.0 is divided by any number to get 0. ()

2.250+ 10? The operation sequence of 6-30 is: 250 plus the sum of 10, multiplied by 6 minus 30. ()

Any number divided by 0 is 0. ()

Fill in the blanks.

1. Add () to a number to get the original number; Multiply a number by 0 to get ();

Divide 0 by a number () to get 0; () inseparable.

2. When calculating147+(251-51), the first step is to calculate (), and the result is ().

3. () method, () method, () method and () method are collectively called four operations.

4. In an expression, only the operations of addition, subtraction, multiplication and division should be calculated in the order (), and the operations of addition, subtraction, multiplication and division should be calculated first () and then (), and those with brackets should be calculated first () and then ().

5. If you want to change the formula 48+32? 4 operation order, add first, then divide, then the formula is ().

6. If there is only addition and subtraction or only multiplication and division in an expression, you need ().

7.40 minus 40 divided by 40 quotient, the difference multiplied by 40, the result is ().

8. Shanghai is about 30 degrees southeast of Beijing, and Beijing is about () degrees east of Shanghai.

Third, choose

1.72 multiplied by 4, divided by the sum of 30 and 6, the quotient is ().

.72 caliber? 4+30+6 B.4？ 72? 30+6 C.4？ 72? (30+6)

2. Which of the following formulas gets 67, and its serial number is ().

A.(550+450)? (25? 2) B.80？ 5? 3 C.(320+570？ 38)? five

3. Shenyang is 35 degrees southwest of Jilin, so Jilin is in Shenyang ()

A.b. 35 degrees southwest C. 35 degrees northeast

4. In the following calculation, the correct result is ()

.65 caliber? 5? 3=39 B. 15+30？ 5=9 C.24+52-24=53

Fourth, calculation

1. 12 point

25? 4= 7? 7? 7? 7= 52+25-52+25= 180+20= 0? 25= 64? 64? 7= 180-80+20= 100+ 100? 0= 3 10-90= 125? 8 = 100-50? 2= 70? 10-400=

2. Think about the operation order of the following questions first, and then calculate. 18 point

250? 4-560? 7 5847-4? (470+530) 35? 8+350? 50

195-(45+45? 9) 43? (324-298) (79+2 1)? (96? 12)

3. Column calculation. 12 point

What is the sum of the quotients of (1).45 and 15 plus 84 and 12? (2) What is the quotient of the sum of 0.78 and 42 divided by 5?

(3) The product of12 and 15, minus the quotient of 540 divided by 9, what's the difference? (4) What is the quotient of the product of .32 times 5 divided by the sum of 26 and 6?

Fifth, the application problem. 30 points

1. The school canteen bought 970 kg of rice, ate it for 3 days, and there were 430 kg left. How many kilograms do you eat on average every day?

The fruit shop sent 25 boxes of apples and 25 boxes of pears. Apples per box 16kg, pears 20kg per box. How many kilograms of fruit did a * * * send?

3. Qianjin Road Primary School had 1548 students last year, 263 students left school in the sixth grade, and 256 students were enrolled this year. How many students are there this year?

4. Guangmingdeng Factory wants to produce 950 energy-saving lamps, and has already produced 630. If the remaining 160 lamps are produced in two hours, how many hours will it take to complete the task?

5. A pen 6 yuan, a ballpoint pen 4 yuan. Teacher Wang bought 24 pens and 35 ballpoint pens as prizes. How much did it cost him?

6. A primary school planted trees on barren hills, with 300 trees planted in 2003 and 4 trees planted in 2004.

Plant 80 trees at a time. How many trees are planted in a year? How much more?

Draw a road map from Xiaohong's house to the zoo according to the description below. 6 points

Xiaohong goes to school like this: from home, walk 600 meters in the direction of 30 degrees northeast, then walk 400 meters in the direction of 40 degrees southeast, and finally drive 800 meters in the direction of 20 degrees northeast to reach school.