1.A 2。 D 3。 C
fill-in-the-blank question
1、 72005635000; 720
2、 15:2 ; 2 in 15
3、 12; 1.5; 80%; 0.8
4, 2 tons of 600 kilograms; 3 kilometers and 50 meters
5、 1 1/ 12 ; 12/ 12
6、2.5 > 125% >; 2/5 >0.25
7、20% ; 40%
8600 kilometers
9. I don't remember how to do it ..
10( 1), 0.4 yuan; 0.8 yuan
10(2), 9 minutes
True or false:
×√×××
Not sure if the answer is standard.