内容正文:
简便计算专项练习
(1)800-245-155 (2) 672-236-164
(3)569-172-169 (4)526-257-43-26
(5) 621-233-121 (6) 476-185-15-76
(7)528-57-243-128 (8) 824-224-178-122
(9)258+139+342+261 (10)138+293+362+107
(11) 657+158-357 (12) 535-156+165
(13) 338+297-197 (14) 672-264+64
(15) 648-351+252-149 (16) 237-245+363-55
(17) 193+(184+107) (18)(236+173)+227
(19) 548+(204-148) (20) (211-158)+189
(21) 660-(160+272) (22) 586-(186+289)
(23) 515-(215-86) (24) 328-(284-172)
(25) 624-296 (26) 328-198
(27) 712-396 (28) 402-198
(29) 456+198 (30) 374+399
(31) 1998+998+98 (32) 1999+199+19+9+4
(33) 125×56×8 (34) 125×32×25
(35) 25×28 (36) 64×125
(37) 360÷8÷5 (38) 420÷(15×7)
(39)100×(90÷25) (40) 4000÷(80÷25)
(41) (40+8) ×25 (42) (20+6)×15
(43) 125×(80-4) (44) (60-6)×70
(45) 83×99 (46) 101×37
(47) 202×23 (48) 198×45
(49) 27×11+27×89 (50) 168×71-71×68
(51) 135×36+65×36 (52) 23×134﹣34×23
(53) 89×28+89×70+89×2 (54) 154×45-42×45-12×45
(55) 35×8+35×6-4×35 (56) 145×58-145×26+145×68
(57) 58×99+58 (58) 69×101-69
(59) 75×99+75 (60) 63×201-63
(61) 56×30+56×69+56 (62) 134×58-33×58-58
(63) 75×8+75×13-75 (64) 45×58-45×26+45×68
简便计算专项练习答案
(1)800-245-155 (2) 672-236-164
=800-(245+155)