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Thursday’s Math

Added Jun 03, 2020 •

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Thursday is reviews are on our fourth page today we're starting with 9430 * 5055 * 6 * 30035 * 3 is 50 55 * 4 Is 2020 + 1 is 21. 5:45 47r answer is 47100 next one 812 * 34 start this like it's 812 * 4 * 2 is 4 * 1 is 4 and 4 * 8 is 32 multiplying before we didn't carry anything now 3 * 2 + 6 3 * 1 3 and 3 * 8 is 24 we're done we're going to add and 27600 is your answer division 705 / 6 you start by saying how many 1 * 6 is 6 subtract 7 - 619 1 * 6 is 6 subtract bring down the last digit it's a 5:45 that would be seven 7 * 6 is 42 subtract and you get three so remember we can ride this is 117 remainder 3 we did talk a little bit about how we can also write a remainder so I did. 117 the remainder goes on the top divisor of 117 and 3/6 could also be reduced to haters are all correct answers one more division here 909 / 12 how many 12 go into 90 7 * 24 so now we're subtracting 9 - 84 is 6 bring down the last digit which is a 9 so now you're thinking how many swells we're going to 6 the answer is five 5 * 12 + 60 the track to get or if we want to write it as a fraction we write 75 the remainder is on top over the divisor 12th 75 and 9/12 works for if you want to reduce the fraction 75 / 3/4 great couple fraction problems worked on fractions yesterday so we are adding or subtracting Remember the Maine for adding or subtracting fractions as you can not add or subtract until you have the same denominator for these first couple we already have the same denominator so these are going to be quick and easy the denominator 7 I'm going to go ahead and rightist greater 2 + 1 + 3 I check to see if you can reduce 370Z reducer we're going to move over to the next one denominators this one is for glad for it so I'm going to check to see if it can be reduced to drink for an eight 5 and you can divide them by 4.2 / 4 4 / 4 is 1/8 / 4 is to semi reduced answer is a half all right next to it's also adding and subtracting fractions but you start with that first question are the denominators the same and right away you're going to notice no they are not so it's been a while since we worked on this but remember denominator find something called a common denominator a number that they will go into the next to each of these fractions I'm going to write and then I'm going to turn this original fraction into an equivalent fraction with a denominator of 12 If I multiply at the top by the same number I'm going to have an equivalent fraction so I think three times 12 times 4 equals 12 times 4 on the bottom the two thirds equal to a 12 serum saying for times what equals 12x * 3 - 2 * 3 on the top one x 3 3 so what I've done is fractions into equivalent fractions for they're still the same value but now they have the same denominator so now I can add 12 + 3 denominators 12 8 + 3 is 11 and it cannot be reduced so that's my final answer right one more again we're subtracting that do not have the same denominator 10 and 3 we need to think of a number that both 10 + 3 they both 30 something to write 30 next to them 10 times 3 equals 30 and 10 9 * 2 so 9:10 to the equal to 27/33 times 10 equals 37 fractions created 7/30 - 10/30 and the denominators going to stay at 30 27 - 10 is 717 / 30 that is my final answer one more page tomorrow

Uploaded by Abigail Maeder.

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Thursday’s Math

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