Question

665×5+667×10怎么 简算？

Answer 1

665*5+667*10
=665*5+（665+2）*10
=665*5+665*10+2*10
=665*（10+5）+20
=665*15+20
=9975+20
=9995

Answer 2

665×5+667×10怎么 简算？
665×5+667×10
=（666-1）x5+（666+1）x10
=666x(5+10)-5+10
=3330+6660+5
=9990+5
=9995

Answer 3

665x5十667X10
二3325十667x10
二3325十6670
二9995

Answer 4

=（600+60+5）×5+6670
=600×5+60×5+5×5+6670
=3000+300+25+6670
=3000+300+25+6000+600+70
=（3000+6000）+（300+600）+（70+25）
=9000+900+95
=9900+95
=9995

Answer 5

665×5+667×10
=665×5+(665+2)×10
=665×5+665×10+2×10
=665×5+665×5×2+2×10
=665×5(1+2)+20
=665×5×3+20
=3325×3+20
=9975+20
=9995