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Math problem: (Click to look carefully) A car stopped in the parking lot at 4: 42. How much should the owner pay? (Come back quickly)
From four forty-two to five. 5- 1=4 (hours)

4* 1.5=6 (yuan)

6+3.5=9.5 (Yuan)

A: Cars mainly pay parking fees in 9.5 yuan.

I. Addition formula

1, addend+addend = sum

2, and-one addend = another addend

Second, the subtraction formula

1, minuend-subtrahend = difference

2. Difference+Minus = Minus

3, the minuend-difference = reduction

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