四年级乘除法简便运算 500 道及答案 (1)
527+ 199 (2)
735- 198 (3)
105× 99 (4)
865- 198 (5)
75× 98 (6) 68× 99+ 68 (7) 63× 88+ 88× 37 (8) 58× 99+ 58 (9) 25× 49+ 75× 49 (10) 575- 78- 22 (11) 48× 89+ 48 (12) 367- 199 (13) 56× 102 (14) 75× 48+ 75× 52 (15) (20+ 4) × 25 (16) 99×11 (17) 32×(200+ 3) (18) 68×39+ 68 (19) 239×101 (20) 38×25×4 (21) 42×125×8 (22) (25×125) ×8×4 (23) 78×125×8×3 (24) (125×25) ×4 (25) (125+ 25) ×4 (26) 127+352+73+4 (27) 89+276+135+33 (28) 5+204+335+96 (29) 25+71+75+29 +88 (30) 243+89+111+57 (31) 399+ (154+ 201) (32)480+325+75 (33)78+53+47+2291+89+11 (34)36+18+64 (35)168+250+32 (36)85+41+15+59 (37)78+46+154 (38)130-46-34 (39)263-96-104 (40)970-132-68 (41)400-185-15 (42)472-126-124 (43)168-28-72 (44)437-137-63 (45)244+182+56 (46)951-395 (47)19+199+1999 (48) 34+304+3004 (49) 798+321 (50)