Страница 77 Часть 1 ГДЗ Рабочая тетрадь Моро Волкова 3 класс (Математика)
- Вычисли значения выражений.
$$7 \cdot 4 = \square\square$$
$$8 \cdot 3 = \square\square$$
$$45 : 9 = \square$$
$$32 : 4 = \square$$
$$6 \cdot 7 = \square\square$$
$$8 \cdot 4 = \square\square$$
$$24 : 6 = \square$$
$$54 : 9 = \square$$
$$9 \cdot 3 = \square\square$$
$$8 \cdot 6 = \square\square$$
$$18 : 9 = \square$$
$$49 : 7 = \square$$
$$5 \cdot 8 = \square\square$$
$$3 \cdot 7 = \square\square$$
$$20 : 5 = \square$$
$$36 : 9 = \square$$
$$6 \cdot 9 = \square\square$$
$$7 \cdot 8 = \square\square$$
$$27 : 3 = \square$$
$$42 : 6 = \square$$
$$4 \cdot 8 = \square\square$$
$$5 \cdot 3 = \square\square$$
$$63 : 7 = \square$$
$$12 : 4 = \square$$ - $$4 \cdot (15 — 6) = \square\square$$
$$64 — 20 — 16 = \square\square$$
$$78 — 58 + 2 = \square\square$$
$$42 : (13 — 6) = \square$$
$$45 : (18 : 2) = \square$$
$$48 : 6 \cdot 4 = \square\square$$ - Реши уравнения.
$$x + 18 = 78$$
$$49 — x = 16$$
$$x — 25 = 19$$ - $$39 + 47$$
$$61 — 18$$
$$80 — 34$$
$$53 + 29$$
$$72 — 43$$
1. Вычислим значения выражений:
$$7 \cdot 4 = 28$$
$$6 \cdot 7 = 42$$
$$9 \cdot 3 = 27$$
$$5 \cdot 8 = 40$$
$$6 \cdot 9 = 54$$
$$4 \cdot 8 = 32$$
$$8 \cdot 3 = 24$$
$$8 \cdot 4 = 32$$
$$8 \cdot 6 = 48$$
$$3 \cdot 7 = 21$$
$$7 \cdot 8 = 56$$
$$5 \cdot 3 = 15$$
$$45 : 9 = 5$$
$$24 : 6 = 4$$
$$18 : 9 = 2$$
$$20 : 5 = 4$$
$$27 : 3 = 9$$
$$63 : 7 = 9$$
$$32 : 4 = 8$$
$$54 : 9 = 6$$
$$49 : 7 = 7$$
$$36 : 9 = 4$$
$$42 : 6 = 7$$
$$12 : 4 = 3$$
2. Выполним действия по порядку:
$$4 \cdot (15 — 6) = 4 \cdot 9 = 36$$
$$64 — 20 — 16 = 44 — 16 = 28$$
$$78 — 58 + 2 = 20 + 2 = 22$$
$$42 : (13 — 6) = 42 : 7 = 6$$
$$45 : (18 : 2) = 45 : 9 = 5$$
$$48 : 6 \cdot 4 = 8 \cdot 4 = 32$$
3. Решим уравнения:
$$x + 18 = 78$$
$$x = 78 — 18$$
$$x = 60$$
$$49 — x = 16$$
$$x = 49 — 16$$
$$x = 33$$
$$x — 25 = 19$$
$$x = 19 + 25$$
$$x = 44$$
4. Вычислим:
$$39 + 47 = 86$$
$$61 — 18 = 43$$
$$80 — 34 = 46$$
$$53 + 29 = 82$$
$$72 — 43 = 29$$
