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Addition within 100
Addition with 3 numbers within 100
Addition within 200
Addition word problem within 100
Addition within 1,000
Aaron made
forty
paper airplanes and
fifty
paper boats. How many paper crafts did he make?
paper crafts
Answer
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Hint
Can you answer 10 correctly?
The sum of 40 and 50 is
?
+50
40
?
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)