Ответ:
а) 5 + 1 = 5 + 1 + + = 6 = 6
б) 2 + 3 = 3 + 2 + + = 5
в) 5 + 1 = 5 + 1 + + = 7
г) 6 - 1 = 6,4 - 1,1 = 5,3
д) 4 - 1 = 4 - 1 = 3
е) 3 - 1 = 3 - 1 = 1
15 - (6 + 2) = 15 - (6 + 2) = 15 - 8 = 6
а) 4 + 2 = 6 + = 6
б) 6 + 2 = 8 + = 8
в) 4 + 1 = 5 + = 6
г) 5 - 2 = 3 - = 3
д) 4 - 2 = 2 - = 2
е) 3 - 1 = 2 - = 1
12 - (7 + 1) = 12 - (7 + 1) = 12 - 8 = 3 = 3
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Answers & Comments
Ответ:
Вариант 1, задание 1.
а) 5
+ 1
= 5 + 1 +
+
= 6
= 6
б) 2
+ 3
= 3 + 2 +
+
= 5
в) 5
+ 1
= 5 + 1 +
+
= 7
г) 6
- 1
= 6,4 - 1,1 = 5,3
д) 4
- 1
= 4
- 1
= 3
е) 3
- 1
= 3
- 1
= 1
Вариант 1, задание 2.
15
- (6
+ 2
) = 15
- (6
+ 2
) = 15
- 8
= 6
Вариант 2, задание 1.
а) 4
+ 2
= 6
+
= 6
б) 6
+ 2
= 8
+
= 8
в) 4
+ 1
= 5
+
= 6
г) 5
- 2
= 3
-
= 3
д) 4
- 2
= 2
-
= 2
е) 3
- 1
= 2
-
= 1
Вариант 2, задание 1.
12
- (7
+ 1
) = 12
- (7
+ 1
) = 12
- 8
= 3
= 3