(38) 541×67-67×441
(39) 43×201
(40) 102×35
(41) 304×22
(42) (30+4)×25
(43) 38×7+62×7
(44) 152×8+148×8
(45) 16×401
(46) 103×23
(47) (30+2)×15
(48) 125×(8+16)
(49) 68×48+68×2
(50) 5×27+63×5
(51) 12×(40-5)
(52) 64×9-14×9
(53) 35×98
(54) 23×134-34×23
(55) 102×45
(56) 648+203
(57) 98×32
(58) 44×25
(59) 63+15×2
(60) 43+43×39
(61) 27×37+37×23
(62) 256×7-56×7
(63) 48×101-48
(64) 99×62+62
(65) 41×99
(66) 765+98
(67) 560÷16
(68) 201×34
(69) 36×25
(70) 304+297
(71) 18×45+18×55
(72) 226×13-26×13
(73) 15×301-15
(74) (30+8)×25
(75) 25×65+25×25
(76) 75×141-75×40