Page 77 - 5.3.1

special-edu.kz.
special-edu.kz.

2) (25•4)•5 = 25• (4•5); special-edu.kz.

100•5 25•20
special-edu.kz. special-edu.kz. special-edu.kz.
3) (100 + 4)•12 = 100•12 + 4•12 =

= 1200 + 48 =1248;

4) (70 – 43)•18 = 70•18 – 43•18 =
= 1260 – 774 =486.

1. Ñôîðìóëèðóéòå ïðàâèëî –ïåðåìå-

ñòèòåëüíîå ñâîéñòâî ñëîæåíèÿ.
special-edu.kz. special-edu.kz. special-edu.kz.
2. Ñôîðìóëèðóéòå ïðàâèëî – ñî÷åòà-

òåëüíîå ñâîéñòâî óìíîæåíèÿ.
3. Çàïèøèòå ñ ïîìîùüþ áóêâ ðàñ-

ïðåäåëèòåëüíîå ñâîéñòâî óìíîæåíèÿ

îòíîñèòåëüíî ñëîæåíèÿ. Ïðèâåäèòå

ïðèìåðû.

62. Âû÷èñëèòå çíà÷åíèå âûðàæåíèÿ íàè-
special-edu.kz. special-edu.kz. special-edu.kz.
áîëåå ïðîñòûì ñïîñîáîì, ïðèìåíèâ

ñâîéñòâà ñëîæåíèÿ è óìíîæåíèÿ

(óñòíî):

1) 36 + 89 + 64;

2) 45 + 21 + 15 + 49;

75
special-edu.kz. special-edu.kz. special-edu.kz.