When you are solving an addition calculation with a two-digit number, you need to think about tens and ones. A place value chart can help you to see the value of each digit in a number. For example, ...

NARRATOR: Yes, that is quite a hard sum. It might be easier if we separate the 17 into a 10 and a 7, and the 14 into a 10 and a 4. That gives us a 10, a 10, a 7 and a 4. Let's start by adding the ...

Let’s see if you’ve got enough. Why don’t you start by counting up the astro bugs? 1… 2… 3. Then the space grubs. That’s 1… 2… 3… 4… 5. Now all ...

I probably could have guessed that. What an interesting shop. NARRATOR: That’s a good idea, Fin. Arrange your credits into stacks of 10 to make them easier to count. 1 stack of 10… 2 stacks of 10.

An arrangement of prescription oxycodone pills. Dr. Mariano Macias, an adolescent medicine specialist at London's Children's Hospital, says the hospital has seen "alarming numbers" when it comes to ...

You can find the difference between two numbers in more than one way. You can count up from the smaller number to the larger number. Or, you can count back from the larger number to the smaller number ...

NARRATOR: Hello Snoot, I see you’re shopping. NARRATOR: Let’s see, you’ve got 5 eyeballs and 5 blobs. The eyeballs are 3 credits each and the blobs are 2 credits each. Add those 2 prices together. 3 ...

19 is only 1 away from 20, so you prefer to start by multiplying 20 times 5, which equals 100. Then we need to take away a squadron of 5, because there are actually only 19 squadrons, not 20. 100 take ...

Adding single digit numbers can sometimes make double digit numbers. A handy way to make this easier, is by making 10 first. This diagram shows the connection between the numbers that form number ...

A common factor is a number that can be divided into two different numbers, without leaving a remainder. Often numbers can share more than one common factor. It is possible to find the common factors ...