÷= ÷=
0.25小时=分 35厘米=米
5.04÷61 45÷361 1.455…
(40+4)×2.5=40×2.5+4×2.5,运用了乘法律。
3×0.7=2.1 3.3×6.7=22.11 3.33×66.7= 3.333×666.7=
1.2+3.8= 6.87-0.87= 0.28×10= 0.24÷3=
5.6÷0.8= 8.65×0= 24×0.5= 0.57÷0.1=
①0.86×17=
②1.06×2.5=
③0.95×0.95≈(得数保留两位小数)
④6.21÷0.03=
⑤ 12.6÷0.28=
⑥3.81÷7 ≈(得数保留两位小数)
① 1.25+4.6+0.75
② 1.25×0.25×4×0.8
③ 7.28+3.2÷2.5
④ 2.07÷0.4÷2.5
⑤ 1.2×2.5+0.8×2.5
⑥ 101×0.45