Download presentation

Presentation is loading. Please wait.

Published byBuck Hood Modified over 8 years ago

1
CHAPTER 1 Whole Numbers

2
Place Value In Whole Numbers The position a digit has in a number is called its PLACE VALUE. For WHOLE NUMBERS the PLACE VALUES are as follows: MillionsHundred Thousands Ten Thousands ThousandsHundredsTensUnits 1 000 000100 00010 0001000100101

3
Non-Calculator Methods for Addition and Subtraction When adding or subtracting numbers without a calculator make sure that the columns for each place value are carefully lined up in the number you are working with. eg 1 1 8 7eg 21 7 5 4 5 4- 4 7 0 +3 2 1 01 2 8 4 3 4 5 1

4
Multiplying a Whole Number by 10, 100, 1000 …. When you multiply a whole number by 10 you add 1 zero. When you multiply a whole number by 100 you add 2 zeroes. When you multiply a whole number by 1000 you add 3 zeroes. and so on …... Multiplying a Whole Number by Multiples of 10 (20, 30, 40..) Multiply by the number of tens and then multiply by 10. eg 1eg 2 537 x 20412 x 30 537 x 2 = 1074412 x 3 = 1236 1074 x 10 = 107401236 x 10 = 12360

5
Dividing a Whole Number by 10, 100, 1000 …. When you divide a whole number by 10 all digits get moved 1 place to the right. When you divide a whole number by 100 all digits get moved 2 places to the right. When you divide a whole number by 1000 all digits get moved 3 places to the right. and so on …... Dividing a Whole Number by Multiples of 10 (20, 30, 40..) Divide by ten and then divide by the number of tens. Eg 1Eg 2 7350 ÷ 50840 ÷ 20 7350 ÷ 10 = 735840 ÷ 10 = 84 735 ÷ 5 = 14784 ÷ 2 = 42

6
Long Multiplication Example 1 Work out, without a calculator 417 x 238 Answer 1 4 1 7 x 2 3 8 3 3 3 6 1 2 5 1 0 Because we are really multiplying by 30 + 8 3 4 0 0 Because we are really multiplying by 200 9 9 2 4 6

7
Long Division Example 2 Work out, without a calculator 16422 ÷ 34 Answer 2 0 0 4 8 3 3 4 1 6 4 2 2 34 x 1 = 3434 x 4 = 13634 x 7 = 238 34 x 2 = 6834 x 5 = 17034 x 8 = 272 34 x 3 = 10234 x 6 = 20434 x 9 = 306

8
Order of Operations in a Calculation A useful way to remember the order to do mathematical operations in, is: B racket O ver (powers) D ivide A dd S ubtract

Similar presentations

© 2024 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google