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Topic 11 Lesson 11-6 Explain Subtraction Strategies

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morning everybody Glaston 11-6 misses explain subtraction strategies kind you should be on page 666 find 532 - 215 use any strategy I think the best strategy for this is to just line them up and down like no paint is regrouping if you need to so 2-5 I can't do that so I'm going to cross out borrow my 10 12 - 572 - 1 is one and Five Mile 2 is 3 317 so down here when you explain you just say I used regrouping that is easier that can be okay if you chose to use a number line then that's fine if you chose to dry your block that's also fine okay just just just explain what you did at the bottom okay I use regrouping to solve the problem I've got here to subtract any way you choose show your work and then explain why this strategy Works pay here that used the blocks I personally don't really like using block I just like to lie my answers at or excuse me like my numbers up to find my answer. 5-6 they can't do that I'm going to borrow a 10 15 - 6 is 9 3 - 1 is to remind as 1 is to 229 I use regrouping okay that's all you got to do guys you don't have to go into Super hey if you use a number line you can say I counted back on the number line okay just as easy hear same thing we're going to practice I want you guys to pause this video K after you do and you want to do Pages question 2 3 4 K in 5 are you going to do those 4 problems Diamond Plaza took video and then when you unfollow that you're going to have to fill in the answers or check your answers on my answers okay so pause your video now all right meteorite. we how much liter cam just thinking here who are the 2 3 and 4 check your answers alright 5 number sense use place value to find 748 - 319 paint the 319 is 300 + 10 + 9 K to the hundred you do 748 - 300 equals 448 448 - 10/438 + 438 - 9 402 one more Beach the sticks even wants to use Mental Math to find 352 - 149 show how she could find the difference okay and then it's as soon as a good strategy yes or no so whichever one you decide to use the show then you tell me if it's good or not if it says use Mental Math but sometimes that's hard so I just stay right here and your problem solve it okay get 203 and then you can do anything I use regrouping so you don't have to answer question as specifically as is that okay we're going to skip higher order thinking for today all right and let's just do number eight you're going to fill in the numbers in the block okay just counted fat on this open number line use the cards to find the missing numbers in the open number line okay so he started counting back so that probably means those numbers going to be the biggest number of the for the biggest number of those four or eight 100 + 12 so then you're Andrew - 102 that would be 712 and then you're going to do mine at 10 which would be 702 Santana Row that one for you and then minus 5 680 if you wanted to check it on the side okay you can all right

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Topic 11 Lesson 11-6 Explain Subtraction Strategies

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