①1.25×3 ②0.8×0.2 ③0.5×1.2 ④3.7×1.6 ⑤1.1×0.8
4.39×0.984.39 0.27×9.92.7×0.99 1.04×1.781.04
1-0.64= 3.7+2.3= 4.2-0.8= 2.8×1000=
321÷100= 1.4×0.3= 1.25×0.8= 2.4×5=