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Money · Ages 7+ · Set B
The rice on the chessboard
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B
Name
Date
Start
Finish
Goal: 15 min
Score
/ 12
Remember:
Doubling starts small and grows very fast, one square after another.
Questions
1
Each square holds double the one before. Which holds two hundred fifty-six?
the ninth square
the second square
the third square
2
Each square holds double the one before. Which holds sixty-four grains?
the seventh square
the fourth square
🔟
the tenth square
3
Each square holds double the one before. Which holds two grains?
the eighth square
the sixth square
the second square
4
Each square holds double the one before. Which holds sixteen grains?
the third square
the ninth square
the fifth square
5
Each square holds double the one before. Which holds eight grains?
🔟
the tenth square
the fifth square
the fourth square
6
🟦
Does one, two, three, four double each time?
Yes
No
7
Which row doubles each time?
🟠
five, ten, twenty, forty
🟫
one, three, five, seven
🟩
two, four, six, eight
8
Which row doubles each time?
🟣
four, eight, sixteen, thirty-two
🟩
two, four, six, eight
🟫
one, three, five, seven
9
Each square holds double the one before. Does the sixth square hold thirty-two grains?
Yes
No
10
Which row doubles each time?
🟨
ten, twenty, thirty, forty
🔷
three, six, twelve, twenty-four
🟦
one, two, three, four
11
Which row does not double each time?
🔷
three, six, twelve, twenty-four
🟩
two, four, six, eight
🟠
five, ten, twenty, forty
12
Which row does not double each time?
🟠
five, ten, twenty, forty
🟨
ten, twenty, thirty, forty
🔶
two, four, eight, sixteen
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