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New exercises from Khan Academy 2019-09-16T17:34:19.961840
Actualizado: hace 1 hora 11 mins

Mendelian genetics

Sáb, 2019-09-07 03:30
Test your knowledge on Mendelian genetics!

Calculating percentiles

Vie, 2019-09-06 23:42
Practice working with percentiles.

Making conclusions about the difference of means

Vie, 2019-09-06 21:18
Practice using test statistics, P-values, and confidence intervals to make conclusions in a two-sample test for the difference of means.

Fraction multiplication as scaling

Vie, 2019-09-06 20:48
Interpret how multiplying by a fraction greater or less than 1 affects the product. 

Add fractions with common denominators

Vie, 2019-09-06 19:54
Add two fractions with the like denominators.  

Equivalent expressions with common denominators (denominators 10 & 100)

Vie, 2019-09-06 18:52
Rewrite a fraction addition problem so the fractions have common denominators.  All items have denominators of either 10 or 100.  

Add and subtract mixed numbers (no regrouping)

Vie, 2019-09-06 18:51
Practice adding and subtracting mixed numbers with common (like) denominators.

Compare fractions with different numerators and denominators

Vie, 2019-09-06 18:50
Practice comparing two fractions with different denominators with greater and less than symbols. 

Visually compare fractions with unlike denominators

Vie, 2019-09-06 18:50
Practice comparing fractions by looking at pictures. Fractions in these problems do not have common denominators.

Common denominators

Vie, 2019-09-06 18:50
Practice rewriting fractions to have the same denominator.

Equivalent fractions

Vie, 2019-09-06 18:49
Practice making equivalent fractions by multiplying the numerator and denominator by the same number.

Write whole numbers as fractions

Vie, 2019-09-06 18:45
Represent fractions as whole numbers and whole numbers as fractions.

Unit fractions on the number line

Vie, 2019-09-06 18:45
Use unit fractions to think about the location of other fractions on the number line.

Cut shapes into equal parts

Vie, 2019-09-06 18:45
Practice telling if a shape has been divided into equal parts.

Divide whole numbers to get a decimal (1-digit divisors)

Vie, 2019-09-06 18:42
Dividing whole numbers to get a decimal quotient like 15÷6=2.5

Multiply decimals (1&2-digit factors)

Vie, 2019-09-06 18:42
Multiply numbers with tenths and hundredths like 3.1x3.3 or 1.7x0.12

Basic multi-digit division

Vie, 2019-09-06 18:41
Divide numbers like 105÷21 or 133÷14.

Divide using place value

Vie, 2019-09-06 18:39
Decompose 3- and 4-digit dividends to divide them by a 1-digit divisor.  

Represent multi-step word problems using equations

Vie, 2019-09-06 18:39
Represent multi-step word problems using equations with a letter standing for the unknown quantity. Equations include addition, subtraction, multiplication, and division.

Excretion in human beings

Vie, 2019-09-06 13:28
This exercises assesses student's understanding of structure and function of excretory system at an elementary level.