初中数学试卷
练习一(有理数的混合运算)
一、 直接写出答案: ① -(-4)2=
② -(-5)3=
③ 3×(-3)2 ④ 〔(-2)×(-3)〕2=
32?4?⑤????? ⑥ ?4?
2?3?3⑦-5-23= ⑧ 2×(-4)3= 二、计算:
?1?2225①??????4????1? ②?24??3?7??2???1? ?4?
34?2?32③?23??????2 ④??2??5???2.8????2?
9?3?
2金戈铁制卷
?31??6??7?153⑤ ?32???4?????9????4?? ⑥????????????
?6??31??30?14??
??1?3?822⑦?3????????3?????2??
5????3??2
?5??1??1?⑧???3??2???6?????????????
?6??8??2?2223
练习二(有理数的混合运算)
计算:
①32÷(-2)3-32×5;
金戈铁制卷
?1?2 ②??0.75??????2.5???0.4?
?2?3
3?11?3??1?75?③???1??36 ④????????2?
4?6?11??2?96?2
?47?575315?3??3??4?⑤ ?? ?????????????? ⑥??3636362559????????23
??1?17?3??2⑦?0.9??????0.04??100 ⑧?12??1????3???3?
2?310?5????
⑨(9-10)×(10-11)×(11-12)×……×(108-109)
金戈铁制卷
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