4th Grade - Add And Subtract Large Numbers

Addition, Subtraction, Multiplication and Division
Add and Subtract Large Numbers
Distinguish between cause and effect and between fact and opinion in expository text.
The ability to differentiate facts from opinion and causes from effects when reading expository texts.

Sample Problems


What are facts, or details? (small bits of information – important concepts and ideas broken into easy-to-understand parts)


What is an opinion? (someone’s perspective or point of view; what they think about something – a belief, etc.)


What is a cause? (the reason something happens)


What is an effect? (the result, consequence, outcome of something happening)


What is expository text? (text that informs, describes, or explains something)

Learning Tips


Discuss the importance of multiple perspectives with your child in many different contexts, especially when searching for veracity, or truth. Even news reports, which are supposed to report factual information free from bias and prejudice, are affected by people’s opinions and points of view. Watch part of the news together and detect the opinions – usually they are pretty obvious, but sometimes subtle!


Write your own editorial column! Choose a current event article that you can use as inspiration to be a journalist and write your own article. Highlight the facts and underline the opinions in the article. Ultimately, you will only use the facts (and just think about the author’s opinions) to write your own article with your opinion on the presented topic. Possible topics: election 2008, Beijing Olympics, back to school, a sport event or game, etc.


Read a social skills story such as Blubber by Judy Blume. New York: Yearling, 1976 (Available in Spanish: La ballena). Synopsis: Jill joins her classmates in harassing Linda until she herself finds out what it feels like to be a victim. If you don’t have a similar book that talks about the causes and effects of hurt feelings, discuss a personal story or example. Everyone has taken part in hurting others’ feelings and having their feelings hurt – how can that process be stopped?


Make a “ME” list. Divide a piece of paper into two columns. Title one column “Facts about Me” and the other “Opinions about Me.” Distinguish where details about your self should be categorized. For example, your date of birth and age are facts, as is the position you play in sports (e.g., “I am the head cheerleader for our cheer team.”). Things that others think about you or that you think about yourself, such as “I am really good at math/ soccer, etc.” are opinions. You can ask others for their opinions about you if you need help.


Is there something you really want, and perhaps have really wanted it for a long time? Make a flow map of the item or goal you have. Write your goals or item desired in the middle. Then, write the causes that will help to gain that item on the left and the effects of gaining that item on the right.

Example: Causes getting a pony Effects

I love horses and have studied them I will have to feed, clean, water, etc. it

I have friends with horses I could enter shows and travel

Extra Help Problems


What is the opposite, or an antonym, of a fact? (opinion)


What is the opposite, or an antonym, of an opinion? (fact)


What are synonyms for an opinion? (perspective, belief, point of view, etc.)


What are synonyms for a fact? (truth, reality, actuality, information, evidence)


What are synonyms for a detail? (point, feature, element, aspect, specificity)


What does objective mean? (unbiased, neutral, unprejudiced)


What is the opposite of objective? (subjective)


Why are newspapers expected to report facts? (news is supposed to be based on proven, researched information and knowledge but it doesn’t always work that way)


Are there opinions in newspapers? (yes, even in the news sections – sometimes subtle and sometimes obvious)


What are synonyms for a cause? (reason, root, basis, etc.)


What are synonyms for an effect? (result, happening, consequence, outcome, etc.)


How are causes and effects related? (they have a reciprocal, sometimes cyclical relationship where one leads to another)


So can an effect from one cause also be a cause for something else? (yes, although that can be confusing, think of causes and effects like dominoes – sometimes they even make circles)


What graphic organizer can be used to show cause and effect? (Flow Map, cyclical diagram)


What is a synonym for evidence? (support, facts, justification, verification, data, etc.)


If someone is quoted in an article, does that automatically make it an opinion? (no – the person could be sharing a fact)


Related Games


Copyright ©2009 Big Purple Hippos, LLC