Mathematics examination questions and answers from primary school to junior high school

I. Calculation (28 points)

1. Write the number directly. 4 points (approximate symbols are estimation questions)

1322- 199= 1.87+5.3= 2-2÷5 = ( + )×56=

603×39≈ 4950÷5 1≈ 10÷ × 10= ( ): =

2. Find the value of unknown x (4 points)

X- = 1.75 0.36:8=X:25

3. How to simply calculate (16 points)

1 × +2 × + ( + )×7×5×[0.75-( - )] + ×(2.5 - )

4. Column calculation (4 points)

The difference between (1)4.6 minus 1.4 is divided, and (2) the sum of a number is less than 2 times of 30 times 4. What is the result? What's this number? (Equation solving)

Two, true or false (5 points)

(1) A cuboid, its length, width and height are expanded by 2 times and its volume is expanded by 6 times. - ( )

(2) The attendance rate of Workshop A is higher than that of Workshop B, indicating that there are more people in Workshop A than in Workshop B. ()

(3) Natural numbers are composed of prime numbers and composite numbers. - ( )

(4) When the scale is fixed, the distance on the map is inversely proportional to the actual distance. - ( )

(5) If the number A is equal to the number B, the ratio of the number A to the number B is 6: 5-().

III. Write the serial number of the correct answer in brackets (5 points)

(1) Sanyo TV Factory will draw () in order to clearly show the monthly output and the changes in the first half of the year.

[A bar chart, B line chart and C fan chart]

(2) two variables x and y, when XY = 45, x and y are ()

[A proportional quantity b is proportional quantity c, not proportional quantity]

(3) The denominator of' should be increased by 15, and the numerator should be enlarged, keeping the fraction size unchanged ().

[A 4 times B 3 times C 15 times D 6 times]

(4) Divide the rice into () portions, and each portion is rice.

[ A 18 B 54 C 6 ]

(5) Dissolve 20 grams of sugar in 80 grams of boiling water, and the sugar water will contain sugar ().

[A B 20% C D 20 g]

Four, fill in the blanks (16 points)

(1)3.45 hours = () hours () minutes 50 square meters = () hectares

(2)7 kg is less than () kg; 20 tons is 25 tons after an increase of ()%.

(3)450007020 is pronounced as (), and the mantissa () after 10,000 is omitted.

(4) 1:( )= =25÷( )=( )%= 20%

(5) Use "

(6)A=2×3×5 and B=3×3×5, then the greatest common divisor of A and B is () and the least common multiple is ().

(7) I bought four kinds of vegetables in the canteen today: cabbage and cauliflower * * 53kg, cauliflower and cabbage * * * 40kg, cabbage and spinach * * * 28kg, cabbage and spinach * * * () kg and four kinds of vegetables * * () kg.

(8) The bottom area and volume of a cylinder and a cone are equal, the height of the cone is 1.8 decimeter, and the height of the cylinder is ().

5. Calculate the area of the shaded part on the right. (Unit: cm) (4 points)

Six, the following questions, only the questions are not calculated (12 points)

(1) The weaving workshop weaves 3,500m in 2.5 hours. According to this calculation, how many meters can you weave in 5 hours?

(2) Specialized households receive a batch of pears, each batch of 30 kilograms, which requires 70 baskets. How many baskets do you need if each basket is loaded with 5 kilograms more?

(3) It takes 8 days for Party A to complete a job alone, and it takes 10 days for Party B to complete it alone, and both work together. How many days are there left in this job?

(4) The car runs between A and B. When I went there, the average speed was 50 kilometers per hour. When I came back, I drove 60 kilometers per hour on average. What is the speed of this car going back and forth between the two places?

Seven, answer the following questions (24 points)

1. The construction team plans to build an expressway with a daily capacity of 4.5 kilometers, which will be completed within 20 days. In fact, it will be built with a capacity of 6 kilometers per day. How many days can it be finished? (Use proportional solution)

2. The price of a set of tables and chairs is 48 yuan, and the price of chairs is the price of desks. What's the price of this chair?

3. A conical sand pile, with a height of 1.5m, a bottom radius of 4m and a sand weight of about 1.7 tons per cubic meter. How many tons does this pile of sand weigh? (Keep the whole ton as a figure)

4. Two piles of coal, A and B, if A is transported to B with 10 tons, then A will be 5 tons less than B. Now that both piles have carried away the same amount of tons, what is left in pile B is what is left in pile A. How many tons of coal is left in pile A at this time?

Eight. Solve problems (6 points)

The retail price of tickets for a large children's amusement park in Xiamen is one 20 yuan. There are 46 people in class 6 (1). Please design two ways to purchase tickets according to the regulations of the park management office (as shown in the figure), and point out which way is the cheapest.

Mode 1:

Mode 2:

The cheapest way to buy tickets is:

Reference answer

I. Calculation

1、 1 123 7. 17 1.6 6 1 24000 100 1000 1/9

5 1

2、X=2― X= 1―

Sixty-eight

1 1

3、4 17 ― 2―

2 13