算数【入試】ばらす・まとめる計算

問１

3.16 × 26 + 13 × 3.68 – 5 × 13 =

答え

65

問２

15.7 × 3 + 0.785 × 28 – 3.14 × 17 =

答え

15.7

問３

480 × 3.7 + 74 × 9.6 – 48 × 31.8 =

答え

960

問４

1.25 × 56 – 32 × 0.25 – 0.625 × 64 =

答え

22

問５

3 × 4 × 3.14 – 0.785 × 12 × 6 + 4 × 1.57 × 8 =

答え

31.4