
递等式计算.197-12×9+61 38+160÷(40-30) (224-185)×12÷26 (25+40)×4 135-135÷15
递等式计算.197-12×9+6138+160÷(40-30)(224-185)×12÷26(25+40)×4135-135÷15(55+250)÷(30-25)...
递等式计算.197-12×9+61 38+160÷(40-30) (224-185)×12÷26 (25+40)×4 135-135÷15 (55+250)÷(30-25)
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(1)197-12×9+61, =197-108+61, =89+61, =150; (2)38+160÷(40-30), =38+160÷10, =38+16, =54; (3)(224-185)×12÷26, =39×12÷26, =468÷26, =18; (4)(25+40)×4, =25×4+40×4, =100+160, =260; (5)135-135÷15, =135-9, =126; (6)(55+250)÷(30-25), =305÷5, =61. |
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