Tisch
1, and the ratio between counting units is ten. ( )
2. The sum of two acute angles is not necessarily greater than 90 degrees. ( )
A ray is 5000 meters long. ( )
The figure composed of two straight lines drawn from a point is called an angle. ( )
5. The number that is more than 1 is10 million. ( )
6 is as long as 7-meter 16 and 6-meter 17 ()
7. There are more boys than girls 14, so there are fewer girls than boys 14 ()
8. The sum of two true scores must be greater than the product of these two true scores ()
9, a bottle of juice 58 liters, drank 38, there are 28 liters left ()
10, the current weight is increased by 2 1% compared with the original weight, that is to say, the original weight is regarded as the unit 1. ( )
extreme
The 1. line segment is the part between two points on a straight line. ( )
2. Only one straight line can be drawn after a little. ( )
A ray is 6 cm long. ( )
The light emitted by a flashlight can be regarded as a line segment. ( )
5. Only one straight line can be drawn after two o'clock. ( )
6. The longer the two sides of the angle, the greater the degree of the angle. ( )
7. A straight line is longer than light. ( )
8. An angle greater than 90 is called an obtuse angle, and an angle less than 90 is called an acute angle. ( )
9. Right angles have no vertices. ( )
10. A fillet is a ray with only one side. ( )
Tisso
1 and 270 have 90 30s. (×)
The quotient of 2.408÷68 is a single digit. (√)
3. The quotient of the number A divided by the number B is15; If both the number A and the number B are tripled, the quotient is 45. (×)
4、 1520÷50=30……2(×)
5. There must be zero at the end of dividend and zero at the end of quotient. (×)
6. Because 78÷6= 13, 7800÷600= 1300. (×)
7. In the division formula, if the divisor is constant and the divisor is multiplied by 18, the quotient will be divided by 18. (√)
8. The number A ÷ the number B = 2 1...2 1, and the minimum number B is 20. (×)
9. In 630÷72≈9, the quotient 9 is greater than the exact value. (√)
The quotient of 10 and 408÷68 is a single digit. (√)
Article 4
1. Add two "0s" at the end of 2.09, and the size of this number remains unchanged. ( )
2. The light from flashlight can be regarded as ray. ( )
3. The bigger the bifurcation on both sides of the angle, the bigger the angle. ( )
Two straight lines that never intersect are called parallel lines. ( )
When an integer is divided by a decimal, the quotient must be greater than the integer. ( )
6.905800 is pronounced as 9005800. ( )
The product of 7.63×87 is equal to the product of 87×7×9. ( )
8. Multiply two factors (both greater than 0). If both factors are amplified by 10 times, the product remains unchanged. ( )
9. A ÷ B = C (both A and B are greater than 0) If A is multiplied by 5 and B is divided by 5, the size of C remains unchanged. ( )
10. The angle has nothing to do with the length of the side, but with the size of both sides. ( )
chapter five
1. In the integer bit sequence table, the advancing rate between any two counting units is 10. ( )
2. The obtuse angle must be greater than the right angle, and the angle greater than the right angle must be an obtuse angle. ( )
3. Rectangle is a special parallelogram. ( )
4. When two numbers are divided, the divisor is multiplied by 10, and the divisor is divided by 10, and the quotient remains unchanged. ( )
The eighth place from the left is 10 million. ( )
6. 197500 ≈ 190000, 598400 = 600000.( )
7. A square with a side length of 4 decimeters has the same circumference and area. ( )
8. To know the size of the class desktop, you must calculate its area. ( )
9. Only one straight line can be drawn through one point and two straight lines can be drawn through two points. ( )
10. The trapezoid is a special parallelogram. ( )