Mentally adds 10 or 100 to a given number 100-900, and mentally subtracts 10 or 100 from a given number 100-900.
This presentation is best used as a center, however can be used as whole group activities. Included within is a variety of hundreds board puzzles to help children explore the patterns of numbers. Two of the puzzles have riddles. One of the puzzles has secret shades to guess and click on to see if you are right. Two puzzles need the numbers put into place, one of them has some numbers and one has no numbers already placed. Two more puzzles need the numbers placed also, one has the hundreds board as a guide and the other does not. One puzzle goes from 100-200, another goes from 100-300. The latter has equations. Two boards have spinners, dice and a tally chart for keeping score. The spinners instruct the students to add between 100 and 800 to the numbers made with the dice. There are three board game slides at the end of the presentation. One of the slides adds tens, another hundreds, and finally a mixed set of questions. For more instructional and interactive slides take a look at Addiing and Subtracting Three Digit Numbers- SmartboardFlip Flop Addition Fun
is one of the games from this presentation. Number Sequencing Fun
Number Sequencing Challenge
and What Comes Next
are also games from this presentation.