A.27米 | B.82米 | C.60米 | D.72米 |
A.54÷6 | B.6+3 | C.54÷3 |
A.340÷20-400÷20 | B.20×(400-340) | C.(400-340)÷20 |
A.先算乘,后算减 | B.先算减,后算乘 | C.从左往右依次计算 |
A.20 | B.37 | C.45 | D.44 |
A.77 | B.106 | C.384 | D.16 |
A.16×4=2×4×8=64 | B.28-20÷4=8÷4=2 | C.12+6×3=12+18=30 | D.50-4×5=50-20=30 |
A.8640 | B.959 | C.290 | D.8540 |
A.5 | B.1 | C.0 |
A.40÷8-8 | B.40-8÷8 | C.(40-8)÷8 |