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Recall from memory multiplying and dividing by 10s, 100s and 1000s

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Set two 'Deepest Ocean' activities to your class called 'Comparing using '&gt' sign with positive whole numbers' and 'Comparing using '&lt' sign with positive whole numbers'. Move through the class offering help where needed and challenge students to explain their choices. Use your Mangahigh analytics platform to check progress and support struggling students.

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Recall from memory multiplying and dividing by 10s, 100s and 1000s

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This is "Place value divide 10 and 100" by Peter Jones on Vimeo, the home for high quality videos and the people who love them.

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Prime and composite number definitiona

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Factor pairs for whole numbers up to 144

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QUESTION: Does this work with larger numbers or does it get confusing?

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multiplying two 2 digit numbers using grid method KS2 KS3

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multiplying using grids by MathemAntics at www.homeschoolcentre.co.uk The Homeschool centre is dedicated to teaching children maths in a fun and innovative way. The homeschool centre strongly believes that all children have a right to learn traditional algorithms for arithmetic despite trendy teaching and natural maths ideals

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Multiply four digit whole numbers

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Look under the game for a HUGE list of activities related to prime, composite, factors and multiples.

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In this math game students have to target and eliminate the number that is not a factor of another given number. Includes sound effects.

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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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Prime Factorization - 5th Grade Math - Finding Factors of a Number (Factoring) - Math Homework Help!

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Let's multiply 9 times 8,085. That should be a pretty fun little calculation to do. So like always, let's just rewrite this. So I'm going to write the 8,085. I'm going to write the 9 right below it and write our little multiplication symbol. And now, we're ready to compute. So first we can tackle 9 times 5. Well, we know that 9 times 5 is 45. We can write the 5 in the ones place and carry the 5 to the tens place. So 9 times 5 is 45. Now we're ready to move on to 9 times 8. And we're going to calculate 9 times 8 and then add the 4 that we just carried. So 9 times 8 is 72, plus the 4 is 76. So we'll write the 6 right here the tens place and carry the 7. Now we are ready to calculate, and I'm looking for a suitable color. 9 times 0 100's plus-- and this is a 7 in the hundreds place, so that's actually 700. Or if we're just kind of going with the computation, 9 times 0 plus 7. Well, 9 times 0 is 0, plus 7 is 7. And then, finally, we have-- and once again, I'm looking for a suitable color-- 9 times 8. This is the last thing we have to compute. We already know that 9 times 8 is 72. And we just write the 72 right down here, and we're done. 8,085 times 9 is 72,765. Let's do one more example just to make sure that this is really clear in your brain, at least the process for doing this. And I also want you to think about why this works. So let's try 7 times 5,396. And I encourage you to pause it and try it on your own as well. I'm going to rewrite it-- 5,396 times 7. First, we'll think about what 7 times 6 is. We know that's 42. We'll put the 2 in the ones place. 4 we will carry. Then we need to concern ourselves with 7 times 9. But then, we have to calculate that and then add the 4. 7 times 9 is 63, plus 4 is 67. So we put the 7 down here and carry the 6. Then we have to worry about 7 times 3 plus this 6 that we had just finished carrying. 7 times 3 is 21, plus 6 is 27. So we'll write the 7 here in the hundreds place and carry the 2. And then, finally, we have 7 times 5, which is 35. But we have to add the 2. 35 plus 2 is 37. So 5,396 times 7 is 37,772.

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Multiplying 4-digit by 1-digit (regrouping) (video) | Khan Academy

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Let's multiply 9 times 8,085. That should be a pretty fun little calculation to do. So like always, let's just rewrite this. So I'm going to write the 8,085. I'm going to write the 9 right below it and write our little multiplication symbol. And now, we're ready to compute.

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Solve problems involving ratios

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Problem Solving - model and solve word problems

Common Core Connection for Grades 6 and 7

Understand the concept of ratio and describe the relationship between two quantities.
Use ratio and rate reasoning to solve real-world and mathematical problems.
Recognize and represent proportional relationships between quantities.
Use proportional relationships to solve multistep ratio and percent problems.

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Play Thinking Blocks Ratios at Math Playground - Model and solve word problems with ratio and proportion.

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Multiplication song

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Times Tables Songs 1-12 for Kids | 23 Minute Compilation from Silly School Songs!

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Multiplication strategies made easy

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How to memorize multiplication facts easily

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How to Easily Memorize the Multiplication Table I Math Tips and Tricks with Art Benjamin

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Factor pairs for whole numbers up to 144

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Factor pairs for whole numbers up to 144

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Target: I can identify factor pairs of a number.

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Please look at all these examples for how your evidence could look.
Challenge yourself to vary the types of evidence that you use. Consider WHAT you are trying to show and which type would best suit that.

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ST6, ST6.1, ST7, ST7.1, ST8, ST9

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ST10, ST11, ST12, ST12.1, ST13

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ST1, ST2, ST3, ST4, ST5 + ST5.1