Madison had 38 crayons in her box. Her best friend gave her 24 more. How many crayons does she have now?
Addition
54+32
86
This tool helps us with the break apart strategy. It has numbers and lines
number line
Ashley has 47 cookies. Her friend has 23 cookies. How many cookies do they have all together?
addition
67+21
88
This strategy breaks apart the smaller number only
break apart strategy
Evan has 89 summer reading books. Dina has 75 summer reading books. How many more books does Evan have?
subtraction
95-23
72
This tool is in the shape of a square and has numbers 1-100 on it
hundreds chart
Mrs. F's class read 62 books. Mr. M's class read 54 books. Mrs. B's class read 50 books. How many books did the second grade read all together?
86+75
161
This strategy is only used for addition. For this strategy, we break apart both numbers in the equation
Partial Sums
Tim has 75 markers. Dave has 25 more markers than Tim. How many markers does Dave have?
75+25=100
Yesterday, the Pizza Palace sold 120 sodas. Today it sold 94 sodas. How many fewer sodas did the Pizza Palace sell today than yesterday?
subtraction
73-48
25
This strategy places the numbers on top of each other and lines it up by place value
stacking method or algorithm
The band sold 130 tickets to adults and 96 tickets to children. How many tickets did the band sell?
226