A Top Ten Resources Production of the Flipped Classroom: Learn the maths you need, where, when and how you want.
Build to 10 and 100
The 10s facts are probably the most important ones that you ever learn in mathematics, followed only by the times tables. There are heaps of ways to practice your 10s facts, so that you can build to 10, e.g. 7 + 5 = (well 5 + 5 = 10, so just add 2 = 12). Notice that we used other doubles with that equation as well.
You can also use this for subtraction:
12 - 5 = ?
Well, let's get to 10 first by taking away 2 from 12.
5 is made of 2 and 3, so we'll need to take away another 3 once we reach 10.
12 - 2 (build down to 10) - 3 =
10 - 3 = 7
Here's a game you can play at home, with cards or dice. Pull a card (or roll the dice), and as quickly as you can, pick the number you need to add to reach 10. Do this with 30 cards, then check your answers using a calculator. Then, try to arrange all the cards in pairs (or groups of 3 or 4) that = 10, e.g. 2 + 3 + 5 would be one group, 8 + 2 is another pair.