We came to the bookstore. I picked out a long-awaited book and went to the cashier. Dad said, "Your book 12.6 yuan, my book 16.3 yuan, I took three ballpoint pens, 1.5 yuan. How much is left in 50 yuan? If you guess right, the rest of the money can buy you ice cream. " I think: 50 minus 12.6 plus 16.3 plus 1.5 times 3 equals 16.6 yuan. I said, "16.6 yuan." "Well, this 16.6 yuan can buy you an ice cream." Dad said happily
When I arrived at the ice cream shop, my father asked me again, "I bought two ice creams with 1.5 yuan and paid 16.6 yuan. How much is left? " I think: simple, 16.6 minus 1.5 times 2 equals 13.6 yuan. I said, "There is 13.6 yuan left." Dad said, "Not bad! Not bad. " I said angrily, "You underestimate me. This is a topic for two years. If I can't even know these, am I still a fifth-grade student? "
Mathematics is inseparable from life.