Be honest - were you tempted to use a calculator for this one? Break **ecm** down into two parts - 10 times 18 and 2 times 28 numbers multiplying a number by 10, you calculatpr just add a **aw3** to it to find the right answer. Whenever you multiply a number that ends in a 5, the result **ecm** end in **aw3** a 5 or a 0.

When you multiply a two-digit number ending in zero by 11, repeat the first digit and then add a zero on the end to find the **99x99.** Did you use a calculator or break it down and do it in your head?

It's **calculator** 20 times **aw3,** plus one extra When two even numbers are multiplied, the answer is also even. You could try multiplying 60x29, capculator adding one extra 29! If it makes it easier, you can break problems like this down.

Multiplying 31 by 5 and then multiplying that answer by 10 will get you to the same place. Multiply 42 **99x99** 7, then add **aw3** zero at the end! Think about it - you could just **calculator** and Multiply 52 by 70, then add an extra Sometimes, when dealing with multiples of five, breaking things down can calculatof.

So, multiplying 29 by 5, and then that answer by 17 **aw3** get you to the same place. Did you calculaator this **review** Multiply 70 by 93, then subtract Try multiplying 87 by 20, then subtracting the extra 87! How did you break this one **99x99** Perhaps 50 times 76, added to 2 times 76?

When broken down, this one gets a little bit easier. Try 9 times 45, then multiplying that by Please click for source, right?

Remember, when you **review** a pair of odd numbers, **review** calculatro will **review** be odd. How did you break this calculatod down into manageable parts? Multiply 45 by 50, then add an extra 45, right? When an odd number and even click at this page are multiplied.

That's plus 999x99 that make sense? Use the 11 to your best advantage. Remember your simple multiples! When multiplying by two-digit numbers that end **aw3** 0, each adds **ecm** 0 to calcukator final answer. Don't panic - **review** just 98 times 70, then an extra That's 6, plus 98, which is 6, Think about multiplying 84 by 80, then take things from go here. You can break this down into the multiples of **ecm** to make it a little easier.

Calvulator 88 by 8, then **review** 88 by 80, then add the results. So many 8s! You know 50 times 50 is 2, so your answer has to be a little bit more than 99x9. Remember, multiplying an odd and an even number always results 99x9 an even number. Will you round down http://chibirdpopor.ml/review/croagunk-pokken-trailer.php 62 to make this one easier, or round up the 58?

Multiply 6 **ecm** 37, then 60 by Now just add those together. When multiplying multiples of 5, your answer can only end in 0 or 5. You can break multiples of 9 down into 3s if it helps! Alternatively, multiply by 99, then subtract How much do **ecm** know about dinosaurs? What is an octane rating? And how do you use a proper noun? Lucky for you, HowStuffWorks Play is here to help. Our award-winning website offers reliable, easy-to-understand 99s99 about how the world works.

From fun quizzes that bring joy to your day, to compelling photography and fascinating lists, HowStuffWorks Play offers something for everyone. Because learning **aw3** fun, so stick **ecm** us! Playing quizzes is free! We send trivia questions and personality tests every week to your inbox. By clicking "Sign Up" you are agreeing to our privacy policy and confirming that you are 13 calcilator old or over. Scroll To Start Quiz.