文档介绍:2
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2 3
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2 3
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2 2
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1.计算题:(10′×5=50′)
(1)3.28-4.76+1
1 32
2
3
2
2
4
2 3
2
2 3
3
2 2
2 2
2
3
4
2
3
1.计算题:(10′×5=50′)
(1)3.28-4.76+1
1 3 1 3 2 - ; (2)2.75-2 -3 +1 ;
2 4 6 4 3
(3)42÷(-1
1 3
)-1 ÷(-); 2 4
(4)(-48) ÷8
-(-25) ÷(-6)
;
(5)-
2 5 1 7 3 1 2
+( - + )×(-). (6)-2 ÷1 ×(-1 ) ÷(1 ) ; 5 8 6 12 5 3 3
1 1 1 1 2 1 3
(7)-1 -(2-)× ×[( ) -( ) ]; (8)-1 ×[1-3×(- ) ]-( ) ×(-2) ÷(- )
3 2 2 2 3 4 4
(9)( + ) ÷
1
10
1 8
[-2 +(-3) -3 × ]; (10)-×3 +×(-2) +(-) ×624.
2 7
(11)-32-
2
( -5) 3 ´(- ) 2 -18 ¸-(-3) 2 ;
5
(12){1+[
1 3
-( - )
4 4
3
]×(-2) }÷(-
1 3
- -
10 4
);
(13)5-3×{-2+4×[-3×(-2)
-(-4) ÷(-1) ]-7}.
(14)(-4)x4+(-9)x2
(15) (-1)³x(-6x½)
(16)9¾x(-7)
(17)2²x[(-7)x(-3²)]
(18)-7²-(-6)²x(-1²)
1
(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+[-]+4/5+19/6
(2