0.86×7=
12.8×42=
0.37×8.4≈(得数保留一位小数)
2.34×0.15≈(得数保留两位小数)
37.9×5 39.9×9.9 81.1×7
12.5×24×2 400.8×0.8 45.8×12
⑴0.2×0.4=
8.2+1.8=
100-35.22=
⑵2.5×0.4=
2.4×5=
0.22×4=
⑶0.9-0.52=
3.99×1=
0.1×3.52=
⑷8.7×(2.86+7.14)=
2.5×6.45×4=
4.5×12 0.8×0.26 0.65×0.13
3.14×0.8 0.49×5.3(保留两位小数) 2.5×0.44
①9.6×9=
②2.5×12.44=
③8.5×1.6=
④※4.51×2.9≈
①3.54×20
②*0.35×0.28
③1.38×0.15
④*0.45×0.57
⑤1.02×2.8
⑥12.75×31
13.76×0.8=
5.2×0.6=
8.4×1.3=
6.4×0.5=
4.48×0.4=
5.25×5=
35.4×4.2=
0.042×0.54=
0.76×0.32=
0.25×0.046=
2.52×3.4=
1.08×25=
(得数保留一位小数。)
(得数保留两位小数。)
(得数保留整数。)