85X 10. 1 103X0. 25
4.7X10.2 7. 63X99 + 7. 63
(6. 7+6. 7+6. 7+6. 7) X2.5
9.8X25X4 24004-16H-0.5
2.8X3.2 + 3.2X7.2 0.65X201
1. 2X2. 5 + 0. 8X2. 5 8.6X10. 1
32X0. 25X0.
125 0. 25X4. 78X4
7.2X0.9 + 0.01X7.2
2.5X7. 1X4 16. 12X99+16. 12
4. 3X50X0. 2
15. 17-6.8-3.2
26X15. 7+15. 7X24 12. 75—(2. 75 + 6. 8)
(2. 275 + 0.625)X0.28 1.27 + 3.9 十 0. 73 十 16. 1
5.2X0. 9 + 0. 9 8. 25X4. 08+0. 75X4. 08+4. 08 4. 32 + 5. 43 + 6. 68
一、能用简便的要简便计算
12. 96- (9.6-1.52)
4.8X0. 25
2. 37X2. 5X4
5. 74X99 + 5. 74
6. 73 + 2. 56 + 1.44 + 3. 27
1.5X102
64-2.64X0.5
8. 9X1. 1X4. 7 1.34 + 1.8 + 3. 66+0.2
2.7X5.4X3.9 0. 96-0. 28 + 0. 04-0. 72
3.6X9.85-5.46 12. 78-(4. 97+2. 78)
8. 05X3.4+7.6 31.7-0.5X0.7-1.65
6. 58X4.5X0.9 35. 72- 4. 9- (5.72+5.1)
4. 8-4. 8X0. 5 3. 1+25. 78+6. 9
(1.25-0. 125) X8 15. 25+4. 72+4. 75+5. 28
4.8X100. 1 34. 82-(4. 82+15. 2)
56. 5X99 + 56. 5 7. 28+0. 94+2. 72+0. 06
7.09X10.8-0.8X7.09 7. 84+0. 73—0. 84
12.5X0.4X2.5X8 1.6+0. 4—1.6+0. 4
40. 5 -^0.81 X0. 18 9.42X10—94.2X0.9
0. 87X3. 16+4. 64 62. 84-2. 54-0. 4
9. 5X101 7. 3X99
0. 68 F (5.2 -3. 5) XI. 25 (1.25+2.5) X8
6. 5X (10-3. 7)+2. 98
L4. 75+8.44-(9. 2-6. 8) J X40
4.4X0.8-3.4X0.8 19. 8-0. 6X0. 6-0. 64
(9.37+9. 37+9. 37+9. 37) X2. 5
2. 48X (7. 3-5. 8M1.5X7. 52
6.81+6.81X99
0. 25X 185X40
0. 125X7.9X16
4. 2. XI.十 1. XI. 75
3.8X10. 1 24- L5. 4+(0. 63+1.294-0. 23) J
2. 5X (3.8X0. 04) 2. 18+4. 65+7. 82+5. 35+12. 5
7.69X101 15. 84-2. 17-3.83
3.8X10. 1 (25+2.5+0. 25) X4
0. 25X39+0. 25 (35. 2X45.6+45. 6X63.8+45. 6
46X0. 33+54X0. 33 ((1.9-1.9X0.9) C3.8-2.8)
二、用竖式计算
1.8+0. 02= 5. 76X3 = 2. 08X7. 5= 0. 43X0. 28=
0. 72*0. 9= 90. 75*3.3 1.05X2.4= 4.6X0. 6=
0.2^0.01= 16.9^0. 13 1.894-0. 54= 3. 08X0. 43=
0. 25X40= 3.7X0.016 5. 61H-6. 1= 5. 22 = 29 二
1.25X0. 8= 5.2X0.6 6. 21^0. 3= 13.95^3. 1=
5. 5X66= 6. 4X0. 5 1. 34-0. 9 5. 93X0. 76
7.8X0. 35= 5. 25 X 5 21.844-0.7 3—2. 08
8.4X0. 25= 0. 042X0. 54 28. 14F6. 7 3. 54X13
4. 1-1.298 0. 25X0.046 0. 396 宁 1.2 二 20-5.674
6. 84X7. 45 1.08X25 15.6X13= 5 ・4 = 0 ・ 036
36. 72 = 2.4 0. 125X1. 4〜 0. 025X 14= 5. 778 = 5.4 二
110. 7^0. 54 10. 1^3. 3= 0. 04X0. 12 = 1. 5X0. 25=
1.204^0.43= 3. 25X9. 04= 6*1.2 二 9. 24-2. 3=
3. 5X0. 2= 7. 15X22 18. 9 宁 0 ・ 54 二 6. 45X0. 73=
4. 8 + 2 = 1. 55 = 3.9 0. 35X8.6= 1. 5X26. 7=
3. 5X24= 8.4X1.3 544-0. 36= 7.218*36
4. 25X24 二 35.4X4.2 0. 462F1.4 5. 244-7.2
5. 24*7.2 2. 52X3.4 0. 7564-0. 36= 5. 844-0. 16
87. 11^3. 1 2 ・ 5 = 0 ・ 7= 3. 06X36 二 8. 02X3. 5=
1-0.01= 3.68X0. 25 1.44^1.8= 8.9X0. 05=
7.6X1.05= 4. 48X0.4 5. 864-0. 24 16. 324-51
5. 56 一 0. 83 4.8X0. 25 = 0. 18X15 二 8 = 11
6. 5-5. 6= 13. 76X0.8= 9. 584-0. 23= 18.72^3.6=
2.84X0. 05 二 10. 754-12. 5= 3. 84X2. 6^ 28. 564-5. 1=
12.3X4X0. 25 12. 96- (9.6-1.52) 85X10. 1 35F125
1.2H-0.25+1.3X4 103X0.25 (4.8 + 6.4) H-8 12.3X4X0.25
12. 96- (9.6-1.52) 85X 10. 1 1. 2H-0. 25+1. 3X4 103X0. 25
(4.84-6.4) 4-8 354-125 40.54-0.81X1.05 34.5X0.03+34.5X0.97
8X4. 3X12. 5 (203.4 + 72.2)三(1.3X0.2) 12. 64- [3. 5- (9.8 —8.7)
97. 5H-0. 39-136. 7 2. 5X102 86. 44-0. 24X0. 25 (9. 6+3. 2) 4-0. 8
4.24-28 11. 164- (10-0. 7)
0. 42X0. 308 0. 76X0. 32 4. 32*3.6 2. 7+3. 13