①89×5=
②246×3=
③433×6=
④505×4=
⑤450×5=
⑥480×2=
21×3=
43×2=
41×2=
200×4=
74+16=
64+22=
33+45=
14+37=
62-18=
70-26=
65-15=
56-24=
①850-239=
②105×6 =
③316×4=
④430×7 =
⑤125×3 =
⑥240×5=
22+38=
78-25=
450-360=
408+396≈
279+30=
584-181=
7×0=
289×4≈
5.7+8.23=
4.67+7.5=
8.65-6.31=
10-7.64=
13.6+8.46=
0.99+1.1=
15.5+6.8=
9.63+8.5=
7.07-3.45=
2.62+4.66=
8.54-5.96=
8.7+1.3=
①966+70=
②844-51=
③476+121=
④353-123=
⑤354-146=
⑥★327+802=
⑦★ 503-165=
379+687387+679 313×7195×9
9.9×5.9 60 1