I've never found Venn diagrams all that useful. To draw one successfully, you already have to know the answer. But here goes... Example: 30 and 42 30, 60, 90, 120, 150, 180, 210 42, 84, 126, 168, 210 These are lists of multiples of 30 and 42 respectively, that would be placed in two circles. The number 210 would be placed in the center where they intersect.
28/42 = 2/3
LCM of 14 28 42 is 84.
150 (42/0.28) To answer a problem such as this use the formula: a % #/100 = is/of (a % # over '100' b/c the most you can have is 100%) [equation reads, "a percentage number over 100 equals 'is' over 'of'"] So in your case it would be: 1) 28/100 = 42/x (then you cross multiply which gives you): [you have the 'is' as your original question states "is 42." You are trying to find the 'of'] 2) 28x = 4200 (then divide 4200 by 28 to solve for x) x=150 Then to check your answer, plug 150 into the x in the original equation and make sure both sides equal each other. So: 28/100= .28 & 42/150= .28
GCF(14, 28, 42) = 14.
How do I do a Venn diagram? 28&42
It has all the factors of 42 on one side and the factors of 60 in the other part with factors for both in the middle.
Put 2, 6, 14 and 42 in the right circle, put 1, 3, 7 and 21 in the space where the circles intersect.
I've never found Venn diagrams all that useful. To draw one successfully, you already have to know the answer. But here goes... Example: 30 and 42 30, 60, 90, 120, 150, 180, 210 42, 84, 126, 168, 210 These are lists of multiples of 30 and 42 respectively, that would be placed in two circles. The number 210 would be placed in the center where they intersect.
fraction of 42 is 28 = 28/42 or 2/3
42-28 = 14
28/42 x 100 = % Answer = 66.66666 recurring % = 67%
28 + 42 = 70
28 is not a factor of 42.
28 : 42 = 2 : 3
7x6=42 7x4=28
42 x 28 = 1176