Ответ:
1.6,300
2.12,960
3.34,000
450×(2×7)=7×(450×2)=7×900=6300
720×(9×2)=9×(720×2)=9×1440=12960
17×2×8×125=(8×125)×(17×2)=1000×34=34000
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Ответ:
1.6,300
2.12,960
3.34,000
Ответ:
450×(2×7)=7×(450×2)=7×900=6300
720×(9×2)=9×(720×2)=9×1440=12960
17×2×8×125=(8×125)×(17×2)=1000×34=34000