1.120-36×4÷18+35
2.(58+37)÷(64-9×5)
3.(6.8-6.8×0.55)÷8.5
4.0.12× 4.8÷0.12×4.8
5.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
6.6-1.6÷4= 5.38+7.85-5.37=
7.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
8.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
9.10.15-10.75×0.4-5.7
10.5.8×(3.87-0.13)+4.2×3.74
11.32.52-(6+9.728÷3.2)×2.5
12.6 ×( 1/2 + 2/3 )
13.8 × 4/5 + 8 × 11/5
14.31 × 5/6 – 5/6
15.9/7 - ( 2/7 – 10/21 )
16.5/9 × 18 – 14 × 2/7
17.4/5 × 25/16 + 2/3 × 3/4
18.14 × 8/7 – 5/6 × 12/15
19.17/32 – 3/4 × 9/24
20.3 × 2/9 + 1/3
21.5/7 × 3/25 + 3/7
22.3/14 ×× 2/3 + 1/6
23.1/5 × 2/3 + 5/6
24.9/22 + 1/11 ÷ 1/2
25.5/3 × 11/5 + 4/3
26.45 × 2/3 + 1/3 × 15
27.7/19 + 12/19 × 5/6
28.1/4 + 3/4 ÷ 2/3
29.8/7 × 21/16 + 1/2
30.101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
1、x05口算.
9×0.9= 9÷0.9= 0.9÷9=
5+0.5×0.5= 5-0.5÷0.5= 5÷(0.5×0.5)=
10.5÷10.5+10.5= 9.9+0.1÷10= (1.7+0.3)÷0.5=
2、在下面的□里填数,在〇里填运算符号.
(1)、42.6+(5.42+7.4)=(□+□)〇□
(2)、12.34-6.13-1.87=□-(□〇□)
(3)、□-(16.5-0.6)=3.14〇□-□
(4)、□÷5÷0.6=15.3÷(□〇□)
(5)、49.07×9.9+49.07×0.1=(□〇□)〇□
3、计算下面各题,能简算的要简算.
21.8-7.22-2.78 9-0.24÷1.6×1.1
9.12+9.12×9-6.02 45.2×66.7+66.7×53.8+66.7
0.25×0.8×0.125×0.4 12.75÷[14.6-(1.3+8.2)]
4、列式计算.
(1)、18个0.9减去8.8的十分之七,差是多少?
(2)、48减去1.2与5的积后,再去除21,商是多少?
整数、小数四则混合运算(3)
1、x05把下面各组算式写成一个综合算式.
(1)、75×5=375 (2)、53.73-17.49=36.24
660-375=285 3.6÷0.9=4
285÷95=3 36.24÷4=9.06
____________ _____________
2、x05把下列算式用文字叙述出来.
(1)、26-(4.5+2.7)÷5 ___________________
(2)、0.32×3+0.12÷0.4 ____________________
3、用简便方法计算下面各题.
4.65×7.6+3.4×4.65-4.65 (0.25+2.5+25)×4
4、列式计算.
(1)、用4.35与3.65的和,去除它们的差,结果是几?
(2)、48减去1.2与5的积后,再去除21,商是多少?
(3)、10.2加上5.6与2.9的差去除90.3,商是多少?
(4)、比37大23的数乘3.6与2.8的差,积是多少?