-(- ) - + + + +
-(+ ) +( - ) - - -
1.53-0.5=
7.8+0.9=
7.5-2.5=
12÷0.4=
0.56+6.44=
356÷100=
5.5×0.1=
1-0.4=
32÷1000=
0.12÷0.2=
1.25×5×8=
2.9+4.7+2.1=
①
②
③
④
⑤
⑥
①+(+)
②++÷
③-+
④-(-)
⑤25×5.2××0.2
⑥36.6÷8÷12.5
÷ ÷
×100
× ÷
(+)×9= 1.5×100= 99×0.8+0.8= 42=
+= 7﹣= ×= ÷=