{"product_id":"math-mammoth-add-subtract-2-a-paperback","title":"Math Mammoth Add \u0026 Subtract 2-A - Paperback","description":"\u003cp\u003eby \u003cb\u003eMaria Miller\u003c\/b\u003e (Author)\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cem\u003eMath Mammoth Add \u0026amp; Subtract 2-A\u003c\/em\u003e deals with two main themes: \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003estrategies for adding and subtracting within 0-20\u003c\/strong\u003e; such as adding just one more, a trick with nine and eight, and subtracting using addition;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ememorizing the basic addition and subtraction facts\u003c\/strong\u003e of single-digit numbers with an answer between 10 and 18.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eWhile focusing on addition and subtraction techniques, the lessons also include \u003cstrong\u003emany word problems\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe goal is to memorize the facts, or at least become so fluent with them that an outsider cannot tell if the child remembers the answer or uses some mental math strategy to get the answer.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eSome children will accomplish this quicker and need less practice, whereas others will take longer. Thus, don't assign all the exercises in the book by default. Use your judgment, and try to match the amount of exercises to your child's need. The ones that don't get assigned can be used later for review. You can also use games to reinforce the facts, and in place of some of the exercises in the book (a list of games is provided in the book).\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eLearning addition and subtraction facts is quite important for later study. For example, regrouping in addition and subtraction (carrying\/borrowing) requires the ability to recall the basic facts efficiently and fluently.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eWe will start the book with a few \u003cstrong\u003emental math strategies\u003c\/strong\u003e (\u003cem\u003eAdd Using \"Just One More\"\u003c\/em\u003e and \u003cem\u003eA Trick with Nine and Eight\u003c\/em\u003e). The lesson Adding within 20 reviews those strategies and gives more practice. These initial lessons don't yet involve actual memorization techniques.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe lesson \u003cem\u003eSubtract to Ten \u003c\/em\u003eexplains another basic strategy, and has to do with subtracting in parts. For example, to do 13 - 5, one can subtract 5 in two parts: first do 13 - 3, which equals 10, and then subtract the rest, or 2 more. Memorizing the subtraction facts will be more efficient, but I want children to understand this strategy, because it is useful in many other situations also.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThen we review how to complete the next whole ten, which is an important concept. An example of this concept is the question: What number do you add to 23 to get 30? As an equation, we write: 23 + __ = 30.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eIn the next lesson, we study sums that go over ten, doing these sums in two parts. For example, in the sum 9 + 7, the child first completes 10 by adding 9 + 1. Then, the child adds the rest, or 6, to 10. Learning this prepares the child for addition facts where the sum is more than 10.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe next lessons, \u003cem\u003eAdding with 9\u003c\/em\u003e, \u003cem\u003eAdding with 8\u003c\/em\u003e, \u003cem\u003eAdding with 7\u003c\/em\u003e, and \u003cem\u003eAdding with 6\u003c\/em\u003e, provide lots of practice for learning and memorizing the basic addition facts. There are 20 such facts: \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e9 + 2 till 9 + 9: 8 facts\u003c\/li\u003e\n\u003cli\u003e8 + 3 till 8 + 8: 6 facts\u003c\/li\u003e\n\u003cli\u003e7 + 4 till 7 + 7: 4 facts\u003c\/li\u003e\n\u003cli\u003e6 + 5 till 6 + 6: 2 facts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe last part of the book includes various lessons titled \u003cstrong\u003e\u003cem\u003eNumber Rainbows\u003c\/em\u003e\u003c\/strong\u003e and \u003cstrong\u003e\u003cem\u003eFact Families with.... \u003c\/em\u003e\u003c\/strong\u003eThese give lots of practice and reinforcement for the basic addition and subtraction facts, emphasizing the connection between addition and subtraction as a strategy for subtraction facts.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe follow-up to this book, \u003cstrong\u003eAdd \u0026amp; Subtract 2-B\u003c\/strong\u003e, practices adding and subtracting two-digit numbers mentally and in columns (regrouping).\u003c\/p\u003e\u003cdiv\u003e\n\u003cstrong\u003eNumber of Pages:\u003c\/strong\u003e 76\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.16 x 11 x 8.5 IN\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003ePublication Date:\u003c\/strong\u003e April 07, 2024\u003c\/div\u003e","brand":"Books by splitShops","offers":[{"title":"Default Title","offer_id":51752343437600,"sku":"9781954358638","price":18.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/9764\/5344\/files\/80828b13db6b5f0bc9d823f9dd3c1351.webp?v=1779993367","url":"https:\/\/ebocreations.com\/products\/math-mammoth-add-subtract-2-a-paperback","provider":"The E-Book Oasis LLC","version":"1.0","type":"link"}