Approximate each computation by replacing a decimal by a compatible decimal or fraction. Show your replacement and explain its advantage on your paper.  Type in the approximation. a)  0.35

Replace each repeating decimal by their fractional equivalent. Show your work on paper and type in the fraction in the blanks. a)   

Perform each operation using regrouping (do not change the mixed numbers into improper fractions). Show all your work on paper and type in your finals answer in the blanks as mixed numbers. Use a/b for fractions. a)    12 7 [a]   b)    8

Obtain a front-end approximation for each sum and difference by using the leading digit. Then obtain a second approximation by rounding to the leading digit. Leading digits: [a1] Rounding: [a2]   Leading digits: [b1] Rounding: [b2]

Compute the following product and write the answer in scientific notation. Show all your work on paper. When completed, type “Done”.

Draw sketches on your paper using the Fraction Bars model to illustrate each equation. On your paper, explain why the Fraction Bars answers are modeled this way. When finished, type in “Done”. a)   

Olesya had a basket of eggs. She gave half of them to her mother. Then her friend took two more to make some cookies. After that she gave 1/3 of what was left to her neighbor and then she made an omelet with four more of the eggs. If she was then left with a half dozen eggs, how many eggs did she start with?  [a] eggs

Complete each equation. Sketch sets of black and red chips to illustrate the equation and explain your reasoning on your paper. Type the answers in for this question.  a)  

Draw sketches on your paper using the Fraction Bars model to illustrate each equation. When finished type in “Done”. a)     b)  

Perform each operation. Write all answers as fractions or mixed numbers in lowest terms. Use a/b for fractions. Show your work on paper and type in the final answer.  a)    2