(1)7.02 liters =7 cubic decimeters and 20 cubic centimeters.

4 square meters 50 square decimeters =4.5 square meters

②50.24 square centimeters

(3)3 1.4 decimeter

(4)2.4649 decimeter

(5)80 cubic decimeters

(6)50.24 cubic centimeters

Second, integrate into life.

( 1)①

8÷2=4 (decimeter)

3. 14×4? ×4

=3. 14× 16×4

=50.24×4

=200.96 (cubic decimeter)

A: I won't write, I'll write it myself ~

②200.96× 1.7=34 1.632≈342(㎏)

A: Omitted.

(2)3. 14×(24÷2)?

=3. 14× 12?

=452. 16 (square centimeter)

452.16× 37 =16729.92 (cubic centimeter) = 16.72992 (cubic decimeter)

16.72992×1=16.72992 (kg)

35×0.5= 17.5 kg

17.5> 16.72992

A: Not enough.

I'm sure it's okay, but it's possible that your topic is different from yours.