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Abacus · Ages 7+ · Set C
Adding three-digit numbers
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C
Name
Date
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Goal: 15 min
Score/ 12
Remember: The top row counts hundreds. Add hundreds, tens and ones, each on their own.

Questions

1
Which number has four hundreds, no tens and six ones?
one hundred thirty-sixfour hundred sixthree hundred twenty-one
2
Which number has two hundreds, four tens and five ones?
two hundred forty-fivethree hundred twenty-onefour hundred fifty-seven
3
Which number has three hundreds, two tens and one one?
three hundred twenty-onefour hundred sixsix hundred thirty-five
4
Which number has six hundreds, three tens and five ones?
three hundred twenty-oneone hundred thirty-sixsix hundred thirty-five
5
Which one is not a good way to add?
💯adding hundreds to hundreds🌀adding hundreds to ones🔢adding tens to tens
6
Which row of the frame holds the hundreds?
🔝the top row⬇️the bottom row↔️the middle row
7
Which one is a good way to add?
🔢adding tens to tens🌀adding hundreds to ones
8
Ten ones make which one?
🪙one hundred🔟one ten🏔️one thousand
9
Ten tens make which one?
🏔️one thousand🪙one hundred🔟one ten
10
⬇️Does the bottom row hold the hundreds?
YesNo
11
Which one is a good way to add?
💯adding hundreds to hundreds🌀adding hundreds to ones
12
Which one is a good way to add?
🔘adding ones to ones🌀adding hundreds to ones
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