document.write( "Question 104322: 21 ___ ___63___ ___ I am told that there is a strategy for finding missing numbers on a number line when the numbers are the same distance apart. I am helping my son with his home work and i need your help \n" ); document.write( "

Algebra.Com's Answer #248069 by smck123(1) $\"\"$ $\"About$

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I think the missing numbers are- 35,49, 77 and 91 (in that order) because 63-21=42. 42/3 places is (you have to include the space \"21\" uses)=14. Add 14 to 21= 35 and subtract 14 from 63 or add 14 to 35= 49. Then add 14 to 63=77 finally add 14 to 77 to get 91. \n" ); document.write( "

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