LESSON 19 EVALUATE AND WRITE EXPRESSIONS



Now you will solve the problem from the previous page using the picture and words.3623091878889)In the expression “15 minus the sum of 6 and 7,” do you add or subtract first? why?36230928772710)When you write a numerical expression, how do you show what operation to do first?445945012895311)Write a numerical expression to show “15 minus the sum of 6 plus 7”.50033239403512)Nick wrote the expression 15 – 6 + 7 to represent “15 minus the sum of 6 plus 7”. Explain to Nick why his expression is incorrect.51758531535513)How can you tell if you need parentheses when you write a numerical expression for a word problem?49170626746714)Write a numerical expression to represent “ 2 times the difference of 8 and 1”. Then evaluate your expression.53483825560515)Write a numerical expression to represent “15 divided by the sum of 1 and 4.” Then evaluate your expression. ................
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