A.99,990 | B.990,89 | C.100,89 |
A.一共有多少间教室 | B.一共安装了多少盏节能灯 | C.每层安装了多少盏节能灯 |
A.300÷5×15 | B.300×5÷15 | C.15÷5×300 |
A.225 | B.900 | C.975 |
A.14×16 | B.14×26 | C.46×24 |
A.70 | B.70个十 | C.70个百 |
A.3个百 | B.33个百 | C.3个千 |
A.156÷6×8 | B.156÷6×(6+8) | C.156÷6×8+156 |
A.420×6×7 | B.420÷6×7 | C.420÷6÷7 |
A.4500 | B.5400 | C.6000 |