This is a mystery picture that could be used any time of the year! In this activity, students first solve place value and addition problems. There are three versions:
The easiest are problems in this format: __ tens __ ones (ex. 6 tens 7 ones = 67).
The next version has some of the __ tens __ ones problems, as well as expanded notation (60 + 7), using doubles, adding 10 (57 + 10).
The first two versions use the 1-120 number chart.
3. The more challenging version uses a number chart ranging from 501 – 620. It has problems such as these: 5 hundreds 6 tens 7 ones, 500 + 60 + 7, 467 + 100, 557 + 10.
For all versions, students then color in these numbers on the appropriate chart to discover the mystery picture. All three versions have the same picture. The picture is a white sailboat with a red, yellow, and white striped sail on a blue ocean.
Answer keys are included for all versions.
Common Core for Second Grade used in this activity: CCSS.MC2.NBTB.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. 2.NBT.3 Read and write numbers to 1000 using base-ten numerals, number names, and expanded form. 2.NBT.6 Add up to four two-digit numbers using strategies based on place value and properties of operations.
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