四年级简算题 17× 4× 25 25× 33× 40 125× 19× 8 25× 125× 16 125× 32 25× 48 2008× 25 125× 792 125× (40+8) (100-4)× 25 (80-4)× 25 57× 32+32× 43 173× 61-73× 61 52× 14-22× 14 81+791× 9 101× 32-32 72+99× 72 26-14)× 8 50× (2-80) (10× 12)-63 (27-23)× 12 (38-16)× 24 (24+38)× 6 (87-42)× 15 (84-15× 3) 16× (49-28) 45× (84-48] ) (58+37)× 6 (64-9)× 5 95× (64-45) (19-14)× 9 5× (6+42) (81-70)× 6 (9+31)× 11 (85+14)× 7 (14+20)× 26 (28+16)× 8 (52-82)×18 (12-36)×41 (58+37)×8 (64-9)×5 (68-68)×55 12×(4+12) 32×(15+25) (6-1)×65 65×(48-12×4) 58×(87-13) 42×(74+6) (6+9)×2
5 (71-56)×92 6×(37-29) 12×(6+8) (12-7)×6 12×(6+7 ) 68×(19+32) (58+37)×2 (64-45)×4 (88-64)×21 (16+64)×65 10×(4-5 ) 38×(50-10) (18+22)×8 (37+21)×38 (50-24)×9 (18+25)+2 (37+44)×11 (42+22 ) ×8 (28+22) ×35 (37+10) ×96 (21+78) ×10 6-(25+75) (22+68) ×28 (90-73)×1