1. (2022二下·安丘期末) 直接写得数

24÷8=         150-70=          800+5000=          1000-400=

25÷6=         280-200=         300+700=            42+56=

35÷6=          51-22=           76-53=              75+35=

192+408≈      709-282≈        508-397≈            407+198≈