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Common Core Standards
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Timed Test For
Add 2-digit numbers by making tens 2
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Sample Problem
**Fill in the blank.** $13+49~$ is the same as $~12 +$ [[☃ math-keypad 1]]
Fill in the blank.
13
+
49
13+49~
1
3
+
4
9
is the same as
12
+
~12 +
1
2
+
Check Answer
What's your name?
Duration
30 seconds
60 seconds (1 minute)
120 seconds (2 minutes)
180 seconds (3 minutes)
300 seconds (5 minutes)