=?(9)7.4 × 0.7 =Р(10)3.4 × 0.6 =Р二、笔算Р25.2÷6 34.5÷15Р三、简便运算Р0.25×4÷0.25×4 3.5×9.9Р四、方程Р15x =30 3x+9=36Р一、口算题Р(1)4.5 × 0.4 =?(2)3.8 × 7 = (3)3.2 × 0.8 =Р(4)4.7 × 0.2 =?(5)1.5 × 6 =?(6)8 × 0.9 =Р(7)9.2 × 0.6 =?(8)2.4 × 9 =?(9)1.8 × 5 =Р(10)8.9 × 0.6 =?Р二、笔算Р7.83÷9 4.08÷8Р三、简便运算Р3.5×99+3.5 3.5×101-3.5Р四、方程Р7(x-2)=7 1.8+2x=6Р一、口算题Р(1)9.7 × 9 = (2)2.4 × 0.4 =?(3)3.5 × 5 =Р(4)6 × 7 =?(5)1.6 × 0.7 =?(6)6.3 × 2 =Р(7)7.1 × 0.8 =?(8)5.2 × 7 =?(9)3.9 × 0.8 =Р(10)9.9 × 0.2 =?Р二、笔算Р6.3÷14 72÷15Р三、简便运算Р3.5×9.9+3.5×0.1 3.5×2.7+35×0.73Р四、方程Р3x+9=12 18(x-2)=27Р一、口算题Р(1)7.7 × 3 =?(2)9.5 × 0.2 =?(3)7.8 × 0.3 =Р(4)3.4 × 8 =?(5)1.3 × 0.6 =?(6)9 × 0.5 =Р(7)3.5 × 0.5 =?(8)3.4 × 9 =?(9)3.4 × 0.9 =Р(10)6.5 × 0.5 =Р二、笔算Р14.21÷7 1.8÷12Р三、简便运算Р3.5×2.7-3.5×0.7 (32+5.6)÷0.8Р四、方程Р12x=320+4x 420-3x=170
全文预览
