course Mth 151 ??????d?ê??y??X??assignment #019
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11:01:09 query 4.2.6 53812 in expanded form. What is 53812 in expanded form?
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RESPONSE --> (5x10^4) + (3x10^3) + (8x10^2) + (1x10^1) + (2x10^0)
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11:01:36 STUDENT RESPONSE: (5*10^4) +(2*10^3) + (1*10^2) +(8 * 10^0)
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RESPONSE --> ok
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11:06:57 query 4.2.20 536 + 279 in expanded notation Write 536 + 279 in expanded notation.
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RESPONSE --> 537 + 278 (5*10^2) + (3*10^1) + (7*10^0) +(2*10^2) + (7*10^1) + (8*10^0) (7*10^2) + (10*10^1) + (15*10^0) which is also (7*10^2) + (1*10^2) + (1*10^1) + (5*10^0) = (8*10^2) + (1*10^1) + (5*10^0) = 815
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11:09:17 ** We write this sum as 5 * 10^2 + 3 * 10^1 + 6 * 10^0 + 2 * 10^2 + 7 * 10^1 + 9 * 10^0 ______________________________ 8 * 10^2 + 10* 10^1 + 15* 10^0. Since 10 * 10^1 = 10^2 we can write this as 9 * 10^2 + 0 * 10^1 + 15 * 10^0. Since 15 * 10^0 = 10 * 10^0 + 5 * 10^0 = 10^1 + 5 * 10^0 we rewrite this as 9 * 10^2 + 1 * 10^1 + 5 * 10^0. This result is expressed in our place-value system as 915. **
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RESPONSE --> I may be very wrong, but I think the answer is 815.
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