3.

Three out of twenty.

2.

15.

Eight thirds.

1 at 6.

0.2

(It's horizontal)

29: 14 times 40=80 (multiplicative commutative law

)

17 times 17 3+8 times 17 3 = 3+65438+8=3 and 65438+8.

(Law of Multiplication and Distribution)

Five (0 of 65438+4+0 of 65438+3) times12 = 7km.