Решить пример 78-18+36=

1000-(325+(325-67))=1000-(325+258)=1000-583=417 рублей
2 способ:
325-67=258
325+258=583
1000-583=417

19.7469×4=78.9876
как то странно

3(целых)<span>3/8</span> × 1(целых)<span>1/15</span> = <span>3 + 3·8/8</span> × <span>1 + 1·15/15</span> = <span>27/8</span> × <span>16/15</span> = <span>27·16/8·15</span> = <span>432/120</span> = <span><span>18·24/</span><span>5·24</span></span> = <span>18/5</span> = <span>3 + 3·55</span> = 3(целых)<span>3/5</span> = 3.6

<h3>1) 36:6=6</h3><h3>90-6=84</h3><h3>2) 40:5=8</h3><h3>60-8=52</h3><h3>3) 36:9=4</h3><h3>50-4=46</h3>