Autumn was constantly misplacing her pencils.  At the start of the school year, she purchased a pack of 20 pencils.  In the first month of school, she misplaced 7 pencils, broke 3 pencils and had to throw them away, she found 4, and bought 2.  How many pencils did Autumn have left?
Autumn was constantly misplacing her pencils. At the start of the school year, she purchased a pack of [NUMBER] pencils. In the first month of school, she misplaced [NUMBER] pencils, broke [NUMBER] pencils and had to throw them away, she found [NUMBER], and bought [NUMBER]. How many pencils did Autumn have left?
Autumn misplaced 7 and broke 3, so that lost her 7+3 = <<7+3=10>>10 pencils
Autumn found 4 pencils and bought 2, so she gained 4+2 = <<4+2=6>>6 pencils
She started with 20 pencils, lost 10 and gained 6 so she had 20-10+6 = <<20-10+6=16>>16 pencils left
#### 16