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Abacus · Ages 7+ · Set C
Seeing the abacus in your mind
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on screen
C
Name
Date
Start Finish
Goal: 15 min
Score/ 12
Remember: Look hard at the frame, then picture it. Read the rows from the top.

Questions

1
Picture it. Three beads on hundreds, five on tens, none on ones. Which number?
eighteentwenty-fourthree hundred fifty
2
Picture it. Three beads on hundreds, none on tens, five on ones. Which number?
fifty-threetwenty-fourthree hundred five
3
Picture it. Five beads on the tens row, three on the ones row. Which number?
fifty-threethree hundred fiveeighteen
4
Picture it. Seven beads on the tens row, none on the ones row. Which number?
three hundred fivethirty-fiveseventy
5
Which number has nothing across on the ones row?
three hundred fiftyforty-twoeighteen
6
Picture it. Four beads on the tens row, two on the ones row. Which number?
forty-twothree hundred fiftyeighteen
7
Picture it. Two beads on the tens row, four on the ones row. Which number?
forty-twotwenty-fourseventy
8
Which number has an empty ones row?
eighteenthree hundred fiftyninety-nine
9
Picture four hundred eight. Is the ones row empty?
YesNo
10
Picture it. Six beads on the tens row, one on the ones row. Which number?
three hundred fiftysixty-oneseven
11
Which number has an empty ones row?
eightytwenty-fourthree hundred five
12
Which number has nothing across on the ones row?
seventyforty-twosixteen
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