The answers to several fill-in-the-blank questions, true-false questions and multiple-choice questions in mathematics in the sixth grade of primary school! Tell me the answer and figure it out for yourself. Just tell me where the answer comes from. ) Over 80 meters, 1 is (120) meters, and under 300 tons is (360) tons, and 1 is 6 times.

The simplest integer ratio of 18 to 36 is (1:2), and the ratio of 18 to 36 is (0.5).

Two thirds of the number of red flowers is equal to the number of yellow flowers. The number of flowers (safflower) is regarded as a unit, and the relationship is (safflower number * two thirds = yellow flower number).

If the ratio of number A to number B is 4 to 5, then number A is 4/5 of number B, and number B is 5/9 of the sum of number A and number B..

Three quarters × (4/3) = three quarters ÷ (3/4) = three quarters +( 1/4) = 1.

Enclose a triangular joint with 48 cm iron wire. The length ratio of three sides of the triangle is 3 to 4 to 5, and the longest side is {20} cm.

Judge:

4-meter-long steel pipe, cut off 1 meter, and then lower 3 meters. (10)

20 kg minus 10 plus 10, the result is still 10 kg. (10)

After a barrel of oil is used up 1, there is more left than used. ㈤