GED Math: Perfect Squares and Roots Virtual Class Video 0.3

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This has helped quite a bit. I actually used to be afraid of also multiplying numbers without a calculator! Now I’m like, I can do this and I know this!

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You mentioned that you worked with adults with disabilities I'm kinda in that area does that mean you can teach me to pass that test too ?

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My materials are designed mainly with struggling students in mind, since those are the ones I work with. Check out my website www.lightandsaltlearning.org for the full math program. Make sure you watch the vids on the homepage so you know how to use the course! There are 3 tiktok vids at the bottom of the page that specifically address struggling learniners!

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[@Commenter-o5f]

More notes (I also need to learn how to do multiplication with an algorithm here lol) *Perfect squares and their roots* perfect square means you could arrange the number into a literal square 9 is a perfect square because it can be arranged as 3x3, the same number of rows and columns 14 is not because it would be 7x2 or 2x7 *List of perfect squares* (memorize) squared odd numbers have odd answers and even ones have even answers 0² = 0 (would be arranged as 0x0, the same number of rows and columns... that being none) 1² = 1 (would be a box that is 1 unit high and 1 unit wide) 2² = 4 3² = 9 4² = 16 5² = 25 6² = 36 7² = 49 8² = 64 9² = 81 10² = 100 11² = 121 12² = 144 13² = 169 14² = 196 15² = 225 *List of square roots of perfect squares* square root asks which number times itself equals the √number given ex: √4: what number times itself equals 4? square root is the inverse of squaring, so you can swap the order the numbers are in and change the symbol √0 = 0 √1 = 1 √4 = 2 √9 = 3 √16 = 4 √25 = 5 √36 = 6 √49 = 7 √64 = 8 √81 = 9 √100 = 10 √121 = 11 √144 = 12 √169 = 13 √196 = 14 √225 = 15 *Other square roots* square roots that aren't of perfect squares can be estimated with a number in between the two nearest perfect squares √13 is not a perfect square, but it's between the perfect squares √9 and √16. those are equal to 3 and 4, so √13 is some number from 3-4 √1936 is between 40 and 50 because 1936 is between 1600 (40²) and 2500 (50²). the specific answer is 44, which can be checked with multiplication *Round numbers* when multiplying with round numbers (those that end in 0), multiply the numbers that aren't 0, then tack on the total number of zeros in the expression 200(7000) = 1400000 2(7) = 14. there are five 0s total in 200 and 7000. 14 followed by five 0s is 1,400,000 21000(300000) = 6300000000 21(3) = 63. there are eight 0s left in the expression. 63 with eight 0s is 6,300,000,000 *Round perfect squares* square the non-zero part and double the number of zeros ex: 70² = 4900 7² is 49 and double the number of zeros in 70 is 00 removing the extra 0s makes the equations the same as the list of perfect squares (ex: 30² = 9000 without the 0s is 3² = 9) 10² = 100 20² = 400 30² = 900 40² = 1600 50² = 2500 60² = 3600 70² = 4900 80² = 6400 90² = 8100 100² = 10,000 *Round square roots of perfect squares* square root the non-zero part and half the number of zeros ex: √1600 = 40 √16 is 4 and half of the two zeros in 1600 is 0 √100 = 10 √400 = 20 √900 = 30 √1600 = 40 √2500 = 50 √3600 = 60 √4900 = 70 √6400 = 80 √8100 = 90 √10000 = 100

[@LightandSaltLearning]

Well done, again!

[@sairaahmed3475]

good

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Thanks!

[@caseyhartsock2750]

FIRST!!!

[@LightandSaltLearning]

Practice this skill at www.lightandsaltlearning.org/0-crucial-ged-basics/perfect-squares-and-their-roots

[@mohammedsaif7186]

Ma'am this page doesn't open. It says the page doesn't exist ☹️

[@LightandSaltLearning]

Uhoh! I changed the name and not the links! Sorry Here you go www.lightandsaltlearning.org/0-crucial-ged-basics/perfect-squares-and-their-roots