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This site has been developed to assist Grades 4, 5, and 6 teachers to integrate technology into their mathematics classrooms, through the use of online math games

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Decimal Rounding to the Nearest Tenths - Spaceships Game

In every trial you will be asked to round a decimal number to the nearest tenths.

Click the spaceship with the correct answer.

For example, if you are asked:
Round this decimal number to the nearest tenths: 45.67,
then click the spaceship with the number 45.7

Every correct click will send the spaceship on its way.

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Decimal Spaceships - Rounding to the Nearest Tenths

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﻿ Decimal Rounding to the Nearest Tenths - Spaceships Game In every trial you will be asked to round a decimal number to the nearest tenths. Click the spaceship with the correct answer. For example, if you are asked:Round this decimal number to the nearest tenths: 45.67,then click the spaceship with the number 45.7 Every correct click will send the spaceship on its way.

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Copyright © 2023 Tang Math LLC. All rights reserved.

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Click on a number to move it between the left and right squares. Numbers in the right grid can be dragged to reorder them. Aim to make the longest possible chain where each number is a factor or a multiple of its predecessor. Each number may be used once only. Chains are bracketed in green. Blue numbers are not part of a chain.

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Factors and Multiples printable worksheet - game
Factors and Multiples printable worksheet - puzzle
On thisresources page there are printable 1-100 square grids.

This is a game for two players.

The first player chooses a positive even number that is less than 50, and crosses it out on the grid.

The second player chooses a number to cross out. The number must be a factor or multiple of the first number.

Players continue to take it in turns to cross out numbers, at each stage choosing a number that is a factor or multiple of the number just crossed out by the other player.
The first person who is unable to cross out a number loses.
Play a few times to get a feel for the game.
Do you have any winning strategies?
Here is an interactive version of the game in which you drag the numbers from the left hand grid and drop them on the right hand grid. Alternatively, click on a number in the left hand grid and it will transport to the earliest empty location in the right hand grid. You can rearrange the numbers in the right hand grid by dragging and dropping them in position. The integer in the top right hand corner grows with the number of factors/multiples you have in a row.
Now for a collaborative challenge...
Rather than playing against a partner, it's time to work together with them to find the longest sequence of numbers that can be crossed out.

Can you cross out more than half the numbers? How are you approaching this challenge to try and make your sequence as long as possible?

You might find this sheet useful, which includes the instructions for this collaborative task with a 100 square.

Printable NRICH Roadshow resources: Instructions + Grid in 2 parts here and here.
This activity featured in an NRICH video in June 2020 and an NRICH student webinar in November 2020.

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A game in which players take it in turns to choose a number. Can you block your opponent?

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Interactive flashcards for addition, subtraction, multiplication and division

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This site has been developed to assist Grades 4, 5, and 6 teachers to integrate technology into their mathematics classrooms, through the use of online math games

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An interactive math lesson teaching the division tables.

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Math Games, Division Games

Demolition Division is a math game that helps students learn division facts. Defend yourself from the advancing tanks by answering problems correctly!

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Master Multiplication Facts - Multiplication.com

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Multiplication.com is the leading resource for helping kids learn the times tables and multiplication facts. Play free multiplication games, take auto-scored quizzes, drill flashcards, and access worksheets.