Current location - Training Enrollment Network - Mathematics courses - How to list two math problems in the first grade of primary school?
How to list two math problems in the first grade of primary school?
Everything else is right!

5. Mom ate half of what Dad ate, and the remaining half was 10, so Dad ate half, and the remaining half was 10x2=20, and the number of crossover points =20x2=40!

6. It turns out that my sister has more dolls than my sister 10! You did the right thing!