简便计算25×33×4×2 12×18﹣12×3+85×12 35.76﹣(12.97﹣6.24)2.6×78+78×7.4 4004×25 19.92+11.55﹣9.92 18.74﹣8.82﹣1.12.
用简便方法计算:24.6×4.6+246×0.44+24.6.
①25.74﹣2.36﹣7.64 ②0.75×0.25×4 ③8.4÷0.25÷4④2.8×3.6+1.4×2.8.
96×101.
48×201.
能巧算的要巧算. (1)7.2×1.25 (2)9.9×26 (3)36.7÷25 (4)19.25﹣6.25÷2.5 (5)19.12÷0.8+3.4.