10 more and 10 less 100 more and 100 less patterns, tens, and breaking apart What is the Sum? What is the Sum? you pick the strategy
100
639
What is 10 more than 629
100
584
What is 100 less than 484
100
783
What comes next in the pattern?
583,683,______
100
check work mat
95
Use work mat A provided to show regrouping. Find the sum of 59+36
100
114
pick the strategy, show your work, find the sum
52+62
200
506
What is 10 less than 516
200
797
What is 100 more than 697
200
65+5=70
70+12=82
Show how to make the next 10
65+17
200
Check work mat
41
Use work mat B provided to show regrouping, Find the sum of 27+14
200
91
pick the strategy, show your work, find the sum
75+16
300
397
What is 10 more than 387
300
262
What is 100 less than 362
300
student has drawn 4 tens and 9 ones
student has drawn 6 ones
students has grouped 10 ones
students has drawn one more 10 rod
student has solved and written the sum 55
Break apart ones to make a ten, what is the sum?
49+6
quick draw on the board
300
Check work shown
89
Use work mat A provided to find the sum of 80+9
300
101
pick the strategy, show your work, find the sum
89+12
400
477
What is 10 less than 487
400
227
What is 100 more than 127
400
157
What comes next in the pattern?
127,137,147,_____
400
Check work shown
57
Use work mat B provided to find the sum of 45+12
400
116
pick the strategy, show your work, find the sum
99+17
500
849
What is 10 more than 839
500
899
What is 100 less than 999
500
student has drawn 3 tens and 8 ones
student has drawn 8 ones
students has grouped 10 ones
students has drawn one more 10 rod
student has solved and written the sum 45
Break apart ones to make a ten, what is the sum?
37+8
quick draw on the board
500
Check work shown
61
Use work mat A provided to show regrouping. Find the sum of 25+36
500
88
pick the strategy, show your work, find the sum
63+25






Addition Strategies

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