1298+789怎么简算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/06 04:11:19
1298+789怎么简算
1298+789怎么简算
1298+789怎么简算
1298+789
=1298+2+700+87
=1300+700+87
=2000+87
=2087
1300+790-3
=1300-2+700+89
=2000+87
=2087
1298+789===1300-2+800-11=2100-3=2087
1298+789怎么简算
1298+789怎么简算
1298+789怎么简算
1298+789
=1298+2+700+87
=1300+700+87
=2000+87
=2087
1300+790-3
=1300-2+700+89
=2000+87
=2087
1298+789===1300-2+800-11=2100-3=2087