32, 16

wrong

correct

wrong

correct

correct

wrong

1:2 1 1/2 1

5: 16 5/ 16

35:32 35/32

2x/3=25×4/5 x=30

12×3/4÷9/2=2

(65+75) 7/8 =160m

7/2×2/5÷7/8=8/5 km

96÷4=24 cm

Length: 24 ÷ (3+2+1) × 3 =12cm, width: 24 ÷ (3+2+ 1) × 2 = 8cm, height: 24 ÷ (3+2

Volume: 12×8×4=384 cubic centimeters.

Four copies in the first quarter, three in the second quarter and five in the third quarter.

Each copy: 7200÷(4+3+5)=600 sets.

Q 1:600×4 = 2400 sets, Q2:600×= 1800 sets, Q3:600×5 = 3000 sets.