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New exercises from Khan Academy 2021-07-25T16:04:56.000000
Atualizado: 2 horas 54 minutos atrás

### Round to nearest 10 or 100 challenge

qui, 2021-04-15 15:17
Give your brain a workout with these challenge problems on rounding.

### Divide line segments

qui, 2021-04-15 14:40
Figure out the coordinates of a point between two other points that gives a certain ratio. For example, find a point B so that it is two thirds of the way between point A and C.

### Understand the commutative property of multiplication

qui, 2021-04-15 14:40

### Compare fractions with fraction models

qui, 2021-04-15 14:22
Practice comparing fractions with the help of visuals aides.

### Determine similar triangles: SSS

qui, 2021-04-15 13:27
Given two triangles with their side measures, determine whether the triangles are similar or not.

### Exchange rates

qui, 2021-04-15 13:27
Practice what you know about exchange rates in this exercise.

### Round to nearest 10 or 100 on the number line

qui, 2021-04-15 13:27
Practice rounding to the nearest ten and rounding to the nearest hundred on the number line.

### Conservation of energy: Numerical calculations

qui, 2021-04-15 13:26
Practice applying the conservation of energy law to numerically solve for an unknown.

### Find 1 on the number line

qui, 2021-04-15 13:26
Locate 1 on a number line labeled with 0 and a unit fraction.

### Recognize fractions

qui, 2021-04-15 13:26
Identify the fraction of a whole that is shaded.  Fractions are less than 1.

### Multiply by 7

qua, 2021-04-14 21:46
Multiply 7 times a number less than or equal to 10.

### Distributive property

qua, 2021-04-14 21:40
Practice decomposing the factors in multiplication problems and see how it affects the product.

### Multiply by 6

qua, 2021-04-14 21:30
Multiply 6 times a number less than or equal to 10.

### Multiply by 3

qua, 2021-04-14 21:28
Multiply 3 times a number less than or equal to 10.

### Biased and unbiased estimators

dom, 2021-04-11 17:54
Practice determining if a statistic is an unbiased estimator of some population parameter.

### Sample means and the central limit theorem

dom, 2021-04-11 17:54
Practice using the central limit theorem to describe the shape of the sampling distribution of a sample mean.

### Equivalent fractions on the number line

dom, 2021-04-11 17:53
Graph and identify equivalent fractions on a number line.

### Disruptions to ecosystems

dom, 2021-04-11 17:53
Test your knowledge of disruptions to ecosystems!

### Unit fractions on the number line

dom, 2021-04-11 17:53
Use unit fractions to think about the location of other fractions on the number line.

### Fractions greater than 1 on the number line

dom, 2021-04-11 17:53