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Drag and drop numbers to complete traditional algorithms. Type the final answer in the box to check. Choose from addition, subtraction, multiplication, or division, select the number of digits in each problem, and decide on the number of problems to complete

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Drag 'N' Drop Math is an online workshop in which students can easily complete multi-digit addition, subtraction (with regrouping), multiplication, and division problems, using big and small draggable numbers. The workshop is totally customizable and gives immediate feedback. This is one of the top ten most popular programs on mrnussbaum.com

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Drag 'N' Drop Math is an online workshop in which students can easily complete multi-digit addition, subtraction (with regrouping), multiplication, and division problems, using big and small draggable numbers. The workshop is totally customizable and gives immediate feedback. This is one of the top ten most popular programs on mrnussbaum.com

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4C - Beat the Calculator: Multiplication

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4C - Beat the Calculator: Multiplication

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More Multiplication & Division Strategies

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More Multiplication & Division Strategies

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Create rectangular arrays and explore their factors.

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Dividing Numbers into Two Factors and Building Arrays to Represent Each Factorization

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Click on potion bottles to match a recipe using a given ratio.

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⚠ Warning! Flash-based game: These games were created several years ago in Flash, which may or may not work on your browser. We are currently working on updated versions.

This game is only playable on platforms that support Adobe Flash and is not supported on mobile devices.

The battle is on in this game where you build your own potions! Check your ratios to win this mixture mix-off! Ratio Rumble addresses Common Core standards related to ratios and equivalent ratios.

A Gold winner in the 2013 International Serious Play Awards.

Ratio Rumble Overview

In Ratio Rumble, the player can choose from 18 different characters to inhabit in the tournament.

Ratio Rumble is all about the player creating the correct ratio given to them by the game. In this case the game asks for two blue potions and one red potion. The player used double the original ratio. This is possible because the ratio is still the same even if its doubled.

Use the health potions that are available to you in your ratios to heal yourself.

Shown above you can see potions with lightning symbols in them, these potions if used in the ratio are what weakens the opponent. The potions with numbers in them are time bombs and if they are not used in the ratio, they explode and weaken the players health. Use these potions in your ratios.

In Ratio Rumble, players have to be able to create the correct ratio using numbers such as the ones shown above. These numbers are used in the more difficult levels and as the player reaches new levels the difficulty increases.

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⚠ Warning! Flash-based game: These games were created several years ago in Flash, which may or may not work on your browser. We are currently working on updated versions. This game is only playable on platforms that support Adobe Flash and is not supported on mobile devices.

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Click on the correct number to answer a variety of problems including: single digit multiplication, 2 digit x 1 digit multiplication, and 3 digit/1 digit division with remainders.

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Select a food and characters to practice division with remainders. Use dividends from 1-500 and divisors from 1-50.

Press the calculator icon for help with calculations.

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From the home screen, create a problem by selecting the characters, items and what to do with any leftovers.

Choose characters (dogs, penguins, ninjas, dinosaurs, aliens) to divide items (waffles, apples, bagels, bones, worms).

Use the sliders to select the number of characters (1-50) and the number of items (1-500), or enter a number directly in each box.

The Random button will randomly select the characters, items, and number of each.

Choose an options to "leave extras on the table" or "divide the extra objects" will indicate whether to indicate a remainder (leave extras) or indicate a fraction that remains (divide extra).

Hit Start to move to the dividing screen.

Dividing Screen

Successively estimate the number of items that each character should receive. For instance, if 305 worms are divided among 13 ninjas, you might proceed as follows:

The calculator can be selected at any time to help with calculations.

Use the New button to choose new numbers.

Use the Reset button to start over with the same numbers.

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Use this applet to illustrate division and remainders by the division of food to aliens, dinosaurs, penguins and more.