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(1)25×4 = (2)30 + 700 = (3)73-30 = (4)1400+1400=
(5)48÷ 4= (6)33+( )=100 (7)40÷ ( ) =20 (8)3×( )=3000
(9)60÷6 = (10)2×20+2= (11)80×2×0= (12)52 ÷ 4 =
(13)30×3+ 4= (14)80÷5÷4 = (15)68-19= (16)179 -79 =
(17)72 ÷9= (18)98+17-36= (19)30+15+30+15= (20)84-17-43=
(21)100×3×3= (22)20×4 ÷4= (23)11×2×5= (24)6×8=
(25)46÷2 = (26)700+ 500 = (27)3×101 = (28)4 ×12 =
(29)700 +900= (30)9 ×300= (31)1400 -800 = (32)36 ÷3 =
(33)1300-600= (34)6 ×40 = (35)1200 -500 = (36)130× 3=
(37)39+43 = (38)49-26= (39)93÷ 3 = (40)90-34=
(41)2×210= (42)86÷2 = (43)37 + 36= (44)90-43=
(45)800×8= (46)1200-400= (47)120- 40= (48)33× 2 =
(49)29+32 = (50)39+ 26=
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