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41 Cards in this Set
- Front
- Back
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ss
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= one-half
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I
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= one
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ll
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= two
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III
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= three
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IV
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= four
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V
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= five
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X
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= ten
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L
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= fifty
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C
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= one hundred
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M
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= one thousand
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Rule #1
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If a symbol follows another symbol of equal or higher value, the two symbols are added together
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Rule #2
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If a symbol follows another symbol of lower value, the lower value is subtracted from the higher value
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Rule #3
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First perform any necessary subtraction, then add the resulting values together to get the final answer
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LVII
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50 + 5 + 1 + 1 = 57
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CCM
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= (1000 - 100 - 100) = 800
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CLXIV
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= 100 + 50 + 10 + (5 - 1) = 164
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Iss
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= 1 + 1/2 = 1 1/2
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CCXXIII
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= 100 + 100 + 10 + 10 + 1 + 1 + 1 =223
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LIX
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= 50 + (10 - 1) = 59
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LXIV
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= 50 + 10 + (5 - 1) = 64
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CCCLXXVIII
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= 100 + 100 + 100 + 50 + 10 + 10 + 5 + 1 + 1 + 1 = 378
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VL
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= (50 - 5) = 45
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XXXIV
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= 10 + 10 + 10 + (5 - 1) = 34
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Addition of Fraction Answers
1/3 + 3/9 = |
common denominator = 9
3/9 + 3/9 = 6/9 |
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3/16 + 5/4 =
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common denominator = 16
3/16 + 20/16 = 23/16 |
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9/10 - 1/5 =
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common denominator = 10
9/10 - 2/10 = 7/10 |
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3/4 + 1/8 =
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common denominator = 8
6/8 + 1/8 = 7/8 |
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15/16 - 1/8 =
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common denominator = 16
15/16 - 2/8 = 13/16 |
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12/14 - 3/7 =
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common denominator = 14
12/14 - 6/14 = 6/14 |
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8/16 - 1/4 =
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common denominator = 16
8/16 - 4/16 = 4/16 |
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2/3 + 1/12 =
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common denominator = 12
8/12 + 1/12 = 9/12 |
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9/30 + 4/10 =
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common denominator = 30
9/30 + 12/30 = 21/30 |
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Muliplication of Fractions
2/6 x 5/7 |
= 10/42
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5/12 x 1/3
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= 5/36
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2/8 x 3/4
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= 6/32
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5/10 x 6/8
5/3 x 1/6 2/4 x 1/3 3/8 x 2/3 3/9 x 2/4 9/10 x 5/8 |
= 30/80
= 5/18 = 2/12 = 6/24 = 6/36 = 45/8 |
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Division of Fractions Answers
1/8 ÷ 5/6 = 1/8 x 6/5 = 6/40 3/5 ÷ 7/4 = 3/5 x 4/7 = 12/35 2/7 ÷ 3/8 = 2/7 x 8/3 = 16/21 9/10 ÷ 3/4 = 9/10 x 4/3 = 36/30 7/12 ÷ 1/9 = 7/12 x 9/1 = 63/12 9/12 ÷ 3/8 = 9/12 x 8/3 = 72/36 2/4 ÷ 3/7 = 2/4 x 7/3 = 14/12 6/3 ÷ 7/8 = 6/3 x 8/7 = 48/21 1/5 ÷ 2/7 = 1/5 x 7/2 = 7/10 |
answer on same card
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Decimal Answers
Add 2.43, 12.78, 345.890, 34.678, and 3.897 and round to the nearest hundredth. |
add them together and get the sum 399.675 - round and you get the answer 399.68
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Multiply 245.789 by 24.567 and round to the nearest tenth.
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multiply and you get 6,038.2983 - round and you get 6,038.3
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Divide 4,356.876 by 15 and round the answer to the nearest whole number
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divide and you get 290.4584 - round and you get 290
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Take the number 1,328.2743 and round it to the nearest thousandth, hundredth, tenth, and whole number
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thousandth - 1,328.274
hundredth - 1,328.27 tenth - 1,328.3 whole number - 1,328 |
