Question
Find 19 + 23 = 42. Choose the correct equation.
- 10 + 20 + 10 + 3
- 10 + 20 + 10 + 2
- 10 + 20 + 10 + 4
- 19 + 20 + 10 + 5
The correct answer is: 10 + 20 + 10 + 2
Add ones. 9 + 3 = 12
12 = 1 ten and 2 ones.
Add tens. 1 ten + 2 tens + 1 ten = 4 tens
4 tens + 2 ones = 42.
Related Questions to study
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Lily has 48 apple trees in her farm. Amelia has 50 apple trees in her farm. How many trees do they have in all?
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