The answer to the math test paper in the second volume of the fourth grade (education edition), the answer should be accurate, the reward should be added, and how much is needed!

1. When calculating 567-67× 5, first calculate (multiply) and then calculate (subtract), and the result is (232).

2. Add 0 to a number to get (the original number); Divide 0 by1(a natural number other than 0) to get 0.

3. The second digit to the right of the decimal point is (percentage), and its counting unit is (0.0 1).

4.0.53 contains (53) 0.0 1. (0.5) if one decimal place is reserved.

6. Move the decimal point of 3. 14 to the left by two digits (0.03 14), and restore the decimal point to the original number (100 times); If you move the decimal point 3. 14 two places to the right, the decimal point will be expanded to (100 times) the original number.

According to the angle, triangles can be divided into (right triangle), (obtuse triangle) and (acute triangle).

8. When Xiao Ming calculated (28+22) ×□, he missed the brackets, and the calculation result was 358. He found mistakes in the inspection and recalculated. The correct result of his calculation should be

Yes (750).

2. True or False: (4 points)

1. An isosceles triangle with an angle of 60 must be an equilateral triangle. correct

2. There is no largest natural number, but there is the largest decimal number. (error)

3, 5 kg 30 g =5.3 kg. (error)

4. Eight percentage points written as decimal is 0.08. (right)

Three. Multiple choice questions: (4 points)

1. Move the decimal point three places to the right and then two places to the left. This decimal point (②).

(1) the size is unchanged; ② Enlarged by 10 times; ③ Reduce 10 times; ④ Enlarged by 1000 times.

2.98×101= 98×100+98×1= 9898, simplified by multiplication (①).

This is easy to calculate. ① Distribution Law ② Exchange Law ③ Association Law

There are (④) decimals between 4.0. 1 and 0.9.