Weather reporters have to give out a lot of information very quickly. That's why they use pictures! The pictures help them tell us about the weather without using so many words. Weather reporters need to know where the cold air is. They need to know where the warm air is. Their reports need to be correct, but they also need to be short. The pictures help weather reporters get the information out in a fast way.

Which sentence best describes the main idea of the paragraph?

Someday we will all have robots that will be our personal servants. They will look and behave much like real humans. We will be able to talk to these mechanical helpers and they will be able to respond to us! Amazingly, the robots of the future will be able to learn from experience. They will be smart and strong workers who will never get tired. Their only goal will be to make our lives easier.

What is this selection mainly about?

If you are feeling sad, you can make yourself feel better by doing a few simple things. You can take a walk (or get another form of exercise), you can talk to a friend, or you can write down your feelings. Writing down the good things in your life will help too. Doing something good for someone else will also help you feel better. If you still feel a little sad, act happy. It works like magic to make you feel better!

What is the main idea?

The earth's surface is constantly changing. All over the world everyday there are earthquakes, floods and volcanoes that quickly change our world. Some changes are too small to see. Others cause tremendous damage and costs millions of dollars to clean up.

Which sentence states the main idea?

How would you write twenty-one thousand, six hundred fifty-six in standard form?

What number is represented by the place value blocks?

What is the place value of the 8 in 872,549?

The city of Centralia has a population of 13,032. How would you write this number in word form?

Select the choice that makes the statement true.

3,892,110 < 389,211