First, I will fill in.
1,. 1? The average share is 1000, one of which is (), which can also be expressed as ().
2. 18.049 consists of 1 (), 8 (), 4 () and 9 (), and its counting unit is ().
3, 2.5 is 250 times the original (), and 68 is 0.068 times the original ().
4, to the store to buy a pencil, each 0.5 yuan, a * * * need () yuan.
5. Nine ones, three percent and four thousandths are ().
6. A hummingbird weighs about 2. 1 g, and 2. 1 has () 0. 1.
7、0.874? The product of 0.22 is () digits after decimal point.
8. There are x kilograms of pears, 2.5 times of apples, () kilograms of apples, and () kilograms of pears and apples.
9. m A sparrow weighs about 0. 106g, where 1 in 0. 106 is in the () position, indicating (), and 6 is in the () position, indicating ().
10, expand 37.6 by 100 times, and then reduce it by 10 times to get the number ().
1 1. Fill in the brackets? 〉〈? Or? =?
4.72? 0.99○4.72 5.43? 0.82○5.43 127? 1.3○ 127
12, 6kg 10g = () kg 4 yuan 9 angle = () yuan 5m = () cm.
Second, please be a small referee.
1、3? 2+8=2x is an equation. ( )
2. Fill in after decimal point? 0? Or remove it? 0? The size of the decimal remains the same. ( )
3. In a triangle, if an angle is acute, then the triangle is acute. ( )
4. Decimal. What's next? 0? Or remove it? 0? The size of the decimal remains the same. ( )
Three ropes of 5.3 cm, 4 cm and 5 cm cannot form a triangle. ( )
6. When both sides of the equation are multiplied or divided by a number (except 0), the equation is still valid. ( )
Third, choose one.
1, the two internal angles of a triangle are 25 degrees and 64 degrees respectively, and this triangle is ().
Acute triangle b right triangle c obtuse triangle
2, in the following, () is an equation.
A 4a+8 B 6b-9 > 12 C a？ 3=9
3. Move the decimal point two places to the left and then three places to the right. This decimal point
A magnification 10 times, b reduction 10 times and c reduction 100 times.
4. The solution of equation 18-x=6 is ().
A x=24 B x=20 C x= 12
5. The number equal to 3.07 is ().
A 3.7 B 3.70 C 30.7 D 3.07。
Fourth, I can calculate
1, vertical calculation: (2 points for each question, ***6 points)
4.85? 0.73= 25.73? 8.3= 9? 5.48=
2. Solving equations: (2 points for each question, ***8 points)
5.34+X = 26.7 5X = = 13.5 X+2X = 45 X？ 0.6=4.5
3. Off-form calculation, simplify what can be simplified: (***8 points)
46.5? 99+46.5 4.85? 1.25? eight
(0.5+0.25)? 4 39? 0. 125? 0.8
Verb (abbreviation for verb) I can draw.
1. What shapes do you see from the top, front and right? Draw a picture on a square paper. (2 points for each question, ***6 points)
Sixth, solve the problem. (22 points)
1. A table is 8 1.5 yuan, which is more than three times the price of a chair. Five dollars. How much is a chair? (5 points)
2. Xiaohua read 100 page in 8 days, and Xiao Qiang read 8 1 page in 6 days. Who reads fast?
Xiaohong and her mother add up to 45 years old. Her mother is eight times as old as Xiaohong. How old are her mother and Xiaohong? (Equation solving) (6 points)
Mom went to the market and bought some beef and eggs. It costs 22 yuan to buy beef, which is four times more expensive than eggs. How much does it cost to buy eggs? (Equation solving) (6 points)
6. Ph.D. in Mathematics.
When handling 10000 bottles, you can get the freight for each 100 bottle. 30 yuan, if you damage a bottle, you won't get the freight, but you still have to pay 50 cents. Someone has to pay 2600 yuan for freight. Ask him how many bottles he has damaged.
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