Which expression should be used to estimate the answer to this story problem?

marcus is reading a long novel. for 5 nights, he read 83 pages each night. how many pages did marcus read?

a.90 × 5

b.90 ÷ 5

c.80 ÷ 5

d.80 × 5

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never