2: 1.6=X:5.6

1.6X=5.6X2

1.6X= 1 1.2

X= 1 1.2/ 1.6

X=7 A: This tree is 7 meters high.

1 solution: there are x driven wheels.

45:500=X:400

500X=45X400

500X= 18000

X= 18000/500

X=36

A: There should be 36 driven wheels.

These questions should have been learned in the sixth grade. I am now 12 years old and have learned the sixth grade questions. How to try the first grade questions?