来自李大勇的问题
口算0.78+0.06=(125+50)-56=71.2+5.3=321-73-27=0.7-0.07=12.8-9.86=18.05-4.56=0.4×1000=3.5+0.6=5-0.15=4.35+5.36=0.32÷100=0.81++0.09+4.3=8-0.43=35×25×4=800÷1000=9800÷25÷4=0÷78=99×45+45=47+99=
口算
0.78+0.06=(125+50)-56=71.2+5.3=321-73-27=0.7-0.07=12.8-9.86=18.05-4.56=0.4×1000=3.5+0.6=5-0.15=4.35+5.36=0.32÷100=0.81++0.09+4.3=8-0.43=35×25×4=800÷1000=9800÷25÷4=0÷78=99×45+45=47+99=
1回答
2020-02-27 23:07