Westen went to the store to buy 12 watermelons. He dropped 8 watermelons onto the floor. How many watermelons did not fall onto the floor?
5 watermelons
On Monday, Jane had 5 pencils. On Tuesday, Jane had 3 pencils. How many more pencils did Jane have on Monday than on Tuesday?
2 pencils more on Monday
Bianca was collecting shells at the beach. She found 4 blue shells, 2 orange shells, and 1 yellow shell. How many shells did she find in all?
7 shells in all
Kendra bought 15 hamsters on Monday. She then bought 10 on Tuesday. How many more hamsters did Kendra buy on Monday than on Tuesday?
5
