/

AMC10 2020 B

AMC10 2020 B · Q1

AMC10 2020 B · Q1. It mainly tests Fractions.

What is the value of $1 -(-2) -3 -(-4) -5 -(-6)$?
计算 $1 -(-2) -3 -(-4) -5 -(-6)$ 的值?
(A) -20 -20
(B) -3 -3
(C) 3 3
(D) 5 5
(E) 21 21
Answer
Correct choice: (D)
正确答案:(D)
Solution
Because subtracting a negative number is equivalent to adding its opposite, the value of this expression is $$1 + 2 - 3 + 4 - 5 + 6 = 13 - 8 = 5.$$
因为减去一个负数相当于加上它的相反数,这个表达式的值为 $$1 + 2 - 3 + 4 - 5 + 6 = 13 - 8 = 5.$$
Topics
Related Questions
Practice full AMC exams on amcdrill.
Try full-length practice and diagnostics at www.amcdrill.com.