Round 351,875 to the nearest hundred thousands?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students