Gerard goes on a two-day hike.
On the first day, he walks km and on the second day he walks km.
How many kilometers does Gerard walk in total?
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Gerard goes on a two-day hike.
On the first day, he walks km and on the second day he walks km.
How many kilometers does Gerard walk in total?
To calculate how many km Gerard walked in two days, we'll add up the number of kilometers he walked each day vertically as follows:
We'll add from left to right as follows:
Which decimal number is greater?
Lining up decimal points ensures you're adding like place values! Tenths go with tenths, ones with ones. Without alignment, you'd be adding tenths to ones, which gives wrong results.
Add zeros to make them the same length! For example, 5.2 becomes 5.20 when adding to 3.75. This helps keep everything aligned properly.
The decimal point in your answer goes in the same column as the decimal points you lined up! Count the places: if both numbers have one decimal place, your answer will too.
Yes, but be extra careful! You can add horizontally like , but make sure you're still adding corresponding place values correctly.
Carrying works the same way as with whole numbers! When tenths add up to 10 or more, carry 1 to the ones place. Practice with simpler examples first.
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