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to host your school's Math-A-Thon
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ForOurSchool.org
to host your school's Math-A-Thon
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Addition
Addition
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Addition metric distance word problem within 20
All Addition math games
Addition within 10
Addition word problem within 10
Addition missing number within 10
Addition missing number word problem within 10
Addition missing number with 3 numbers within 10
Addition of 3 numbers within 20
Addition of 3 numbers word problem within 20
Addition metric distance word problem within 20
Addition of 2-digit numbers within 40
Addition with 2-digit numbers within 100
Lauri's tree house is
6
meters wide. Marlon's tree house is
8
meters wider than Lauri's. How wide is Marlon's tree house?
meters
Answer
Skip
Hint
Can you answer 10 correctly?
The sum of 6 and 8 is
?
?
6
8
When adding numbers, it can be helpful to decompose the second number using the place value method and then use the arrow method to grow the first number by each place value
For example, if we have 225 + 653
Decompose 653 into 6 hundreds, 5 tens, and 3 ones
Grow 225 by +600 (=825)
Grow 825 by +50 (=875)
Grow 875 by +3 (=878)
Strategies:
Arrow Method
,
Break Apart
,
Compensation