计算54÷(3.94+6.86);42×30+268÷67;46×31-3060÷51; &nbs
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/20 01:13:56
计算
54÷(3.94+6.86);
42×30+268÷67;
46×31-3060÷51;
983×(3.8+2.2)+0.237×1000;
0.8×(35+65)×5÷100;
30-[17.8+(6.2+38÷10)].
54÷(3.94+6.86);
42×30+268÷67;
46×31-3060÷51;
983×(3.8+2.2)+0.237×1000;
0.8×(35+65)×5÷100;
30-[17.8+(6.2+38÷10)].
(1)54÷(3.94+6.86)
=54÷10.8
=5
(2)42×30+268÷67
=1260+4
=1264
(3)46×31-3060÷51
=1426-60
=1366
(4)983×(3.8+2.2)+0.237×1000
=983×6+237
=5898+237
=6135
(5)0.8×(35+65)×5÷100
=0.8×100×5÷100
=4
(6)30-[17.8+(6.2+38÷10)]
=30-[17.8+(6.2+3.8)]
=30-[17.8+10]
=30-27.8
=2.2.
=54÷10.8
=5
(2)42×30+268÷67
=1260+4
=1264
(3)46×31-3060÷51
=1426-60
=1366
(4)983×(3.8+2.2)+0.237×1000
=983×6+237
=5898+237
=6135
(5)0.8×(35+65)×5÷100
=0.8×100×5÷100
=4
(6)30-[17.8+(6.2+38÷10)]
=30-[17.8+(6.2+3.8)]
=30-[17.8+10]
=30-27.8
=2.2.
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