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Published byVincent Gallagher Modified over 9 years ago
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I know how to do multiplication, but what about division? Don’t worry Woody, it is easy to relate multiplication and division.
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Multiplication is a shortcut for addition. When you add, you combine amounts. When you have equal amounts to add, you can multiply to find the total.
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Sample There are 5 bicycles that need new tires. How many tires is that? You could add 2+2+2+2+2 to find the total. 22222 ++++ 2 + 2 + 2 + 2 + 2 = 10
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I can also multiply 2 by 5 to find the total. 2 is the number of tires on each bike. 5 is the number of bikes. 2x 5 =10 Total number of tires
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is the operation of making equal groups and finding the number in each group or the number of groups. Wow!!!!!!! That sounds cool! Division
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There are 12 stickers and 3 students. How many stickers can each student get so that they each have the same amount?
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12 ÷ 3 = 4 Total number of stickers Total number of students Number of stickers for each student.
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Sample There are 18 cupcakes. How many cupcakes can you put into 3 boxes so each box has the same amount of cupcakes? 18 Total number of cupcakes ÷3= Total number of boxes 6 Total number of cupcakes for each box.
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Just like subtraction is the opposite of addition, division is the opposite of multiplication. You can use what you know about multiplication to help you with division.
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Multiplication Facts Related Division Facts 4x 5 =20 ÷5=4 5x4 = ÷ 4=5 I’ll do the multiplication facts. Ok, I’ll do the related division facts
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Some people find multiplication easier than division. If you do, when you see division, think about multiplication. 24 ÷ 8 = Think: X 8 = 24 The number you need to write here is called the missing factor. = 3 So, you know Answer because3x8=24 ÷8=3 =3
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Yeah! We did it !
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