Solving Strategies

For maths we had to use different strategies to solve a equation like 84 - 7. The strategies my group used were repeated addition/multiplication, number line, written algorithm, addition and subtraction, counting backwards and division. A strategy is a plan to solve something.

For example 82 - 44. The strategy I'll use will be subtraction. Firstly I'll minus 2 from the 82 to make 80. Next I'll minus 40 from the 80 to make 40. Lastly, I'll minus 2 from the 40 to make 38.

Which means 82 - 44= 38.

Another example 5x5. The strategy I will use will be repeated addition. So I'll first do 5+5+5+5+5 because the equation is asking you to add 5, 5 times. Which means 5x5= 25