3.4
x=62
Put 2 zeros at the end of 25. 2,500...
Yes.
To multiply 127 by 98 using mental math, you can use the distributive property. First, recognize that 98 is 100 - 2. Therefore, you can calculate (127 \times 98) as (127 \times (100 - 2) = 12700 - 254). This simplifies to (12700 - 254 = 12446), giving you the correct answer.
To find the product of 27 and 600 using mental math, you can break it down into simpler parts. First, calculate 27 times 6, which is 162. Then, since 600 is 6 multiplied by 100, you can multiply 162 by 100 to get 16,200. Thus, 27 x 600 equals 16,200.
To find the product of 4x100 using mental math, you can first recognize that multiplying any number by 100 simply involves adding two zeros to the end of that number. So, 4x100 is the same as 4 with two zeros added, which equals 400.
Since 98 is 100 minus 2, you can think of this as 136 + 100 - 2, or 236 - 2, the answer being 234.
Her IQ can be calculated using the formula: (mental age / chronological age) * 100. In this case, her IQ would be (20 / 10) * 100 = 200.
If the boy's chronological age and mental age are equal, his IQ would be assumed to be 100. (Using chronological age x IQ/100 as the template).
math
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The tenth power in math is 100