...formed are shortened as follows : — Two tens into Twenty, Three tens „ Thirty, Four tens „ Forty, Five tens „ Fifty, Six tens „ Sixty, Seven tens...Seventy, Eight tens „ Eighty, Nine tens „ Ninety. When we have taken out one heap, before the second heap is formed we shall have successively — ten...

...twenty-two, and so on to twenty^nine, respectively. Three tens are called thirty; four tens, forty; five tens, fifty; six tens, sixty; seven tens, seventy; eight tens, eighty; nine tens, ninety; and represented by 30, 40, 50, 60, 70, 80, and 90, respectively; and in each case the next nine numbers...

...on to twenty-nine, respectively. Three tens are called thirty; four tens, forty; five tens, fifly ; six tens, sixty; seven tens, seventy; eight tens, eighty; nine tens, ninety ; and represented by 30, 40, 50, 60, 70, 80, and 90, respectively ; and in each case the next nine...

...group, such a group is called a ten. Two tens make twenty ; three tens, thirty ; four tens, forty ; five tens, fifty ; six tens, sixty ; seven tens, seventy ; eight tens, eighty ; nine tens, ninety. These numbers are called the tens. 5. The tens are expressed by writing the nine figures in order before...

...tens make sixty, written 60. Seven tens make seventy, written 70. Eight tens make eighty, written 80. Fifty Six Tens Sixty Seven Tens Seventy Eight Tens Eighty Nine Tens Nine tens make ninety, written 90. Ninety Ten Tens Ten tens combined make o;ie hundred, written 100....

...numbers in the tens place. Instead of saying: Shortcut: Two tens Twenty Three tens Thirty Four tens Forty Five tens Fifty Six tens Sixty Seven tens Seventy Eight tens Eighty Nine tens Ninety A second shortcut: if you only have one of something, you can just say the place value alone. If you...