4,6÷1000×400=1,84(евро)-стоят конфеты
0.76×2=1.52(евро)-2 бутылки лимонада
1.84+1.52=3.36(евро)-всего истратила
5-3.36=1.64(евро)-сдача
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1. Математическое выражение, стоящее под
знаком обыкновенной дроби.
2. Как на Руси называли дроби?
3. Кто впервые в Европе ввёл десятичные
дроби?
4. Математическое выражение, стоящее над
знаком обыкновенной дроби.
5. Формат дроби.
6. В какой стране впервые
встречаются десятичные дроби?
7. Как называется эта дробь 9/8
?
8. Формат дроби.
9. Греческий математик, который
ввёл слова «числитель» и «знаменатель» в оборот?
10. Число, состоящее из одной или
несколько частей (долей) единицы?
<span>
0,09:k=2 2/3:1 7/9
</span>
2 2/3k=0,09*1 7/9
8/3k=9/100*16/9
8/3k=16/100
k=16/100:8/3
k=16/100*3/8
k=6/100
k=0,06
Решение:
35600:4=8900.
853·217=185101.
185101+8900=194001.
Ответ: 194001.