A bin contains 68 counters. Twenty-one are red, 19 are blue, and the rest are green. Which strip diagram best represents g, the number of green counters?
A library display has 105 books. Thirty-six are fiction books, 28 are nonfiction books, and the rest are mysteries. Which strip diagram best represents m, the number of mystery books?
A store has 150 notebooks. Forty-seven are science notebooks and 58 are math notebooks. The rest are art notebooks. Which equation can be used to find a, the number of art notebooks?
A student plans to read 92 pages. She reads 25 pages in the morning and 34 pages in the afternoon. Which equation can be used to find e, the number of pages she still needs to read?