each expression has four 4s and equals 1.
4+4/4-4
(4+4) / (4+4)
44/44
a. Evalute the xpressions to show that they all have a value of 1.
b. Make new expressions that equal each whole number from 2 to 10 for example, 4/4+4/4=2
-you may combine digits.
-you can multiply, divide, add, and subtract, and use powers, square roots, and brackets.
-There may be more than one solution.
-there may be more than one solution.
-you must use all four 4s in each expression.
thanks
See:
http://www.jiskha.com/display.cgi?id=1253667792
a. To evaluate the given expressions, we can follow the order of operations (PEMDAS):
Expression 1: 4 + 4/4 - 4
Step 1: 4/4 = 1
Step 2: 4 + 1 - 4 = 1
Expression 2: (4 + 4) / (4 + 4)
Step 1: 4 + 4 = 8
Step 2: 4 + 4 = 8
Step 3: 8 / 8 = 1
Expression 3: 44/44
Step 1: 44 / 44 = 1
So, all three expressions have a value of 1.
b. To create expressions using four 4s that equal each whole number from 2 to 10, here are some examples:
Expression for 2: (4/4) + (4/4)
Step 1: 4/4 = 1
Step 2: 1 + 1 = 2
Expression for 3: (4 + 4 + 4) / 4
Step 1: 4 + 4 + 4 = 12
Step 2: 12 / 4 = 3
Expression for 4: (4 - 4) + (4 + 4)
Step 1: 4 - 4 = 0
Step 2: 4 + 4 = 8
Step 3: 0 + 8 = 8
Expression for 5: (4 - sqrt(4)) + (4/4)
Step 1: Square root of 4 = 2
Step 2: 4 - 2 = 2
Step 3: 4/4 = 1
Step 4: 2 + 1 = 3
Similarly, you can try different combinations involving addition, subtraction, multiplication, division, and other operations to get expressions for numbers 6 to 10.