2.4/5, 2, 32/63

Third, ellipsis

Four. 1/6 √

43/ 100√

Verb (abbreviation of verb)1,200 ÷1600 = 0.125 =12.5%

98÷200=0.49=49%

A: The number of sixth-grade students accounts for 12.5% of the total number of students in the school. The number of girls in the sixth grade accounts for 49% of the students in the whole grade.

2.6× 3+3× 3+3× 4× 2+6× 3× 2+3× 3× 5 =126 (square meter)

6×3×4+3×3×3=99 (cubic meter)

A: The flower arrangement area is *** 126 square meters, and the volume of this flower stand is 99 cubic meters.