资源描述
(1)3.28-4.76+1-; (2)2.75-2-3+1;
(3)42÷(-1)-1÷(-0.125); (4)(-48) ÷82-(-25) ÷(-6)2;
(5)-+()×(-2.4). (6)-23÷1×(-1)2÷(1)2;
(7)-14-(2-0.5)××[()2-()3]; (8)-1×[1-3×(-)2]-( )2×(-2)3÷(-)3
(9)(0.12+0.32) ÷[-22+(-3)2-3×]; (10)-6.24×32+31.2×(-2)3+(-0.51) ×624.
(11)-32- (12){1+[]×(-2)4}÷(-);
(13)5-3×{-2+4×[-3×(-2)2-(-4) ÷(-1)3]-7}. (14) (-4)x4+(-9)x2 (15) (-1)³x(-6x½)
(16)9¾x(-7) (17)2²x[(-7)x(-3²)] (18)-7²-(-6)²x(-1²)
(19) 39+[-23]+0+[-16] (20)[-18]+29+[-52]+60
(21)[-3]+[-2]+[-1]+0+1+2 (22)[-301]+125+301+[-75]
(23)[-1]+[-1/2]+3/4+[-1/4] (24)[-7/2]+5/6+[-0.5]+4/5+19/6
(25)[-26.54]+[-6.14]+18.54+6.14 (26)1.125+[-17/5]+[-1/8]+[-0.6]
(27) -7.2-2.6+15.6-10.2-6+4.3 (28)(-1 )-1 +(-2 )-(-3 )-(-1 )+4
(29) |-2 |+(-3.7)+|-(+2.7)|-|-(7 )|
参考答案
1.(1)-0.73 (2)-1; (3)-14; (4)-; (5)-2.9 (6)-3 (7)-1;
(8)- ; (9)1; (10)-624..(11)-31; (12)-8 (13)224(14)-34 (15)3 (16)68¼ (17)252 (18)-13 (19) 0 (20)19 (21)-3 (22)50 (23)-1 (24)1.25
(25)-8 (26)-3 (27)-6.1 (28)3 (29)-6
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