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Practice solving multi-step word problems with estimation techniques on Khan Academy.

Solve word problems by comparing whole numbers. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.

2024年8月28日 · Your streak ended because you didn't get at least one skill to proficient in the prior week. To start a new streak, achieve at least one Proficient skill. To maintain your streak, you must achieve at least one Proficient skill every week.The streak window runs from Monday at 12:00am to Sunday at 11:59pm (Pacific Time)

2018年7月16日 · For me, it is easier to think about this problem if I make up the size of the tank. Let's say the tank holds 40 liters. As stated in the problem, it will take 40 minutes to fill the take and 60 minutes to drain it. Making the tank hold 40 liters doesn't change the problem at all.

Learn how to round numbers to the nearest 10 with this Khan Academy video.

However, one difficult concept for 3rd graders, rounding, does not have great skill breakdowns in its available exercises. I would LOVE some exercises along these lines: - -Fill in the missing number on the number line (KA has this skill for 7th graders with negative numbers, but not for a positive integer number line).

crwdns4051973:0crwdne4051973:0. crwdns2657438:0crwdne2657438:0; crwdns6779084:0crwdne6779084:0; crwdns4124269:0crwdne4124269:0

2022年10月22日 · It's important to pay attention to the wording of the problem and identify which variables are related and how they are related in order to determine which one should be divided by the other to find the rate.