Mid-term review (unit 1-3) test paper.

Class: Name: Score:

Fill in the blanks.

1, () is 27; 48 is ().

More than 2.80 meters is () meters; 300 tons is less than () tons.

3, and () are reciprocal, and the reciprocal of () is itself.

4、( )∶( )= =9÷( )=

5. The simplest integer ratio of 18: 36 is (), and the ratio of18: 36 is ().

6. "The number of red flowers equals the number of yellow flowers" means that the number of flowers in () is regarded as the unit "1" and the relationship is ().

7. If the ratio of A number to B number is 4∶5, then A number is B number, and B number is the sum of A number and B number. ..

8. fill in >