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If the estimated value is very different from the calculated value then the answer is wrong. Unfortunately, it does not work the other way. An estimate can be close to the calculated value but the answer can still be wrong.
You can do long multiplication with the help of Vadic maths.
yes multiplication can help with division because if you find the answer to a multiplication problem use the answer to get the divison.Exanple:32divided by4=8=8x4=32
yes i believe that multiplication worksheets will help your daughter with her subjects in school. I found some sites for you to look at that can help you with this www.math-salamanders.com/multiplication-drill-sheets.html
? problem division and multiplication related a solve you help array an can how
How does adding partial products help solve a multiplication problem
in school, i used multiplication in my planner,a print out or a calculator to help me know it
bitchr
The Abacus
1x3=3x3=9
You can get multiplication work sheets at the following online sites I found for you to look at. I hope they are of help to you math.about.com/cs/multiplication/a/multws.htm , and www.tlsbooks.com/mathmultiplicationworksheets.htm
A number multiplied by one is itself. This is the Identitiy Property of Multiplication.