1) 6x5+4x5= a) (6+5)x4 b) (4+5)x6 c) (6+4)x5 d) (6-4)x5 2) 6x5-4x5= a) (6+4)x5 b) (6-5)x4 c) (6+5)x4 d) (6-4)x5 3) 5x4+5x3= a) 5x(4+3) b) 5x4+3 c) (5+3)x4 d) 3x(5+4) 4) 5x4-5x3= a) 5x(4+3) b) 5x(4-3) c) 5x4+3 d) 5x4-3 5) 37x8+37x2 a) 37x8+2 b) 37x8-2 c) 37x(8+2) d) 37x(8-2) 6) 250x(4+8)= a) 250x10 b) 250x48 c) 250x4+250x8 d) 250x4+8 7) 199x4= a) 200-1x4 b) (200-1)x4 c) (199+1)x4 d) 100x4+99 8) 202x5= a) (200+2)x15 b) (200-2)x15 c) 200x15-2x15 d) 200+2x15 9) 50x99+50= a) 50x90+50x9 b) 50x99-50x1 c) 50x99+50x1 d) 50x90-50x9 10) 25x3+25x7= a) 25x3+7 b) 25x10 c) 25x3-7 d) 25+3x7

翰林五上 CH06 整數四則運算

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