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Example:
42401 + 9 = _____
44910
42410
42409
Grades:
Example: 1, __ , 3, 4, 5; mean=3
Step 1: Let N be the missing number.
Step 2: We know, Mean = (Sum of all numbers)/(Number of numbers);
Therefore, Sum of all numbers = Mean x Number of numbers
→ 1 + N + 3 + 4 + 5 = 3 x 5 → N + 13 = 15 → N = 15-13 → N = 2
Step 1: Let N be the missing number.
Step 2: We know, Mean = (Sum of all numbers)/(Number of numbers);
Therefore, Sum of all numbers = Mean x Number of numbers
→ 1 + N + 3 + 4 + 5 = 3 x 5 → N + 13 = 15 → N = 15-13 → N = 2
Grades:
Example:
How many vertices does a square have?
3
4
0
Grades:
Example:
8x100 + 2x10 + 7x1
782
278
827
Grades:
Example:
2044
- 2
2042
Grades:
Example:
How is four written in digits?
4
1
9
Grades:
Example: Convert to a mixed number
4
3
3) = 1
4
= 1 with remainder of 1. The answer is the whole number part, the remainder is the numerator part, and the denominator is the same as the improper fraction.
Therefore, 4
3
1
3
Grades:
Example:
7000
- 2
5000
6008
6998
Grades:
Example:
2
6
+
1
2
1
6
2
3
5
6
Grades:
Example:
What is the greatest common factor of 15 and 33?
Factors of 15 → 1, 3, 5, 15
Factors of 33 → 1, 3, 11, 33
Common Factors → 1, 3
Greatest Common Factors → 3
Grades:
Example:
4 . 4 . 4 = _____
34
43
82
Grades:
Example:
275
752
Grades:
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