71.   When I first started cooking, in college, I thought following a recipe was like following a math problem.

72.   When we entered, he sat hunched over the reservation desk, head in his hands, like a schoolboy struggling with a math problem.

73.   With computers all around them, the NASA ground support team takes up slide rules and pencils to crack a math problem.

74.   After an hour of spelling, the students demanded math problems.

75.   And school officials are facing tough math problems as they try to balance their books in the face of soaring electricity and natural gas bills.

76.   But most people would never need to solve such a complex math problem and the chip runs software applications other than math problems without trouble.

77.   Fox and Blumstein found math problems and mistakes in the FBI report.

78.   In the study, Panza and his colleagues at the heart institute measured forearm blood flow in blacks and whites working on math problems.

79.   Students using state-issued calculators during crucial achievement tests got incorrect answers when math problems were entered too quickly.

80.   Some say they need a calculator for math problems they once could have solved in their heads.