Math: Addition and Subtraction book is excellent for adults who need to learn math from scratch. It starts with very simple 1 + 1 addition and moves on to math equations like if x + 5 = 15, what is x? The book is easy to follow and makes teaching an adult learner easy and simple.At the completion of this book the learner will be able to: • determine number place values • round numbers • add single digit numbers • add double digit numbers without carry-over • add double digit numbers with carry-over • add three and four digit numbers with carry-over • subtract single digit numbers • subtract double digit numbers without borrowing • subtract double digit numbers with borrowing • subtract three digit numbers with borrowing • subtract numbers with zeros • basic addition and subtraction equations • using rounding to estimate answers

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