Основано на упр. 112, стр. 48 Найди и запиши неизвестное число а :4=7. :5=8. :13=6. :18=3. 5\cdot =80. 6\cdot =72. 4\cdot =60. 5\cdot =75. \cdot12=60. 8\cdot =96. \cdot9=72. 11\cdot =66. б :9=4. :7=7. :11=5. :12=7. 40: =8. 63: =3. 42: =3. 60: =5. 90: =6. :7=13. 92: =4. :9=12. в \cdot8=56. 84: =12. :8=8. 9\cdot =45. :7=13. 12\cdot =48. :4=17. 75: =15. \cdot17=51. 5\cdot =90. :17=7. 91: =13.
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Задание

Основано на упр. 112, стр. 48

Найди и запиши неизвестное число

а

  1. [ ] \(:4=7\) .
  2. [ ] \(:5=8\) .
  3. [ ] \(:13=6\) .
  4. [ ] \(:18=3\) .
  5. \(5\cdot\) [ ] \(=80\) .
  6. \(6\cdot\) [ ] \(=72\) .
  7. \(4\cdot\) [ ] \(=60\) .
  8. \(5\cdot\) [ ] \(=75\) .
  9. [ ] \(\cdot12=60\) .
  10. \(8\cdot\) [ ] \(=96\) .
  11. [ ] \(\cdot9=72\) .
  12. \(11\cdot\) [ ] \(=66\) .

б

  1. [ ] \(:9=4\) .
  2. [ ] \(:7=7\) .
  3. [ ] \(:11=5\) .
  4. [ ] \(:12=7\) .
  5. \(40:\) [ ] \(=8\) .
  6. \(63:\) [ ] \(=3\) .
  7. \(42:\) [ ] \(=3\) .
  8. \(60:\) [ ] \(=5\) .
  9. \(90:\) [ ] \(=6\) .
  10. [ ] \(:7=13\) .
  11. \(92:\) [ ] \(=4\) .
  12. [ ] \(:9=12\) .

в

  1. [ ] \(\cdot8=56\) .
  2. \(84:\) [ ] \(=12\) .
  3. [ ] \(:8=8\) .
  4. \(9\cdot\) [ ] \(=45\) .
  5. [ ] \(:7=13\) .
  6. \(12\cdot\) [ ] \(=48\) .
  7. [ ] \(:4=17\) .
  8. \(75:\) [ ] \(=15\) .
  9. [ ] \(\cdot17=51\) .
  10. \(5\cdot\) [ ] \(=90\) .
  11. [ ] \(:17=7\) .
  12. \(91:\) [ ] \(=13\) .

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