Dear students, mathematical calculation is what we are best at. Let's swim in the ocean of calculation together! Believe that you are the best!

Write the number of the following questions directly, you are the fastest! (65438+ 0 points for each question, ***32 points)

1, reading 3.82, writing 0.09.

2, reading, seven out of nine writing.

3. A square has an axis of symmetry, a rectangle has an axis of symmetry and a circle has an axis of symmetry.

4. A square with a side length of 1 decimeter, a perimeter of and an area of.

The denominator of 5 is that the numerator is, plus, it is exactly equal to 1.

6. Write the number directly.

56 + 90 = 42 1 - 185= 0.6 +0.4 = 2.8-0.7=

0 ÷ 100= 20× 30 = 360÷ 6 = 20× 32 =

- - = + = 1 - = + =

12.3+2.9= 1.6 -0.9= 4.8 + 16.5= 9.7 -2.5=

40×( 18+ 12)= 70-30÷ 5 =

1 km-250m = 5m2-380m2 =

Handwritten calculation, write out the operation process. You are the most careful! (2 points for each question, ***30 points)

28 × 6 = 130 × 9 = 67 × 8 =

60 × 80 = 22 × 23 = 32 × 13 =

28 + 12 × 30 38 × 20 - 100 80 × 12 -650

(45+ 25)× 8 8.6 -3.9 -2.8 30-( 17.6+4.9)

320× 3÷6 960÷30 × 5 75×(236- 187)

Solve problems and calculate continuously. You can do it! (3 points for each question, *** 18 points)

The number of A is 58, the number of B is twice that of A, what is the number of B?

326 is 89 more than a number. What's this number?

When a number is divided by 8, the quotient is 38 and the remainder is 7. What's this number?

4. On Children's Day, students published a blackboard newspaper with a length of 18 decimeter and a width of 12 decimeter.

(1) What is the area of the blackboard newspaper?

(2) Put a circle of lace around the blackboard newspaper. How many decimetres does the decal need at least?

A batch of fruits came to the shopping mall, which were sold on the first day, the second day and the second day.

how much is it?