Tutorpip← About this lessonABCHide the answer keyDownload PDF
Money · Ages 7+ · Set C
The rice on the chessboard
Scan to mark
on screen
C
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 eight grains?
the seventh squarethe fourth square🔟the tenth square
2
Each square holds double the one before. Which holds two hundred fifty-six?
the ninth squarethe fifth square🔟the tenth square
3
Which row doubles each time?
🟩two, four, six, eight🟫one, three, five, seven🟣four, eight, sixteen, thirty-two
4
Each square holds double the one before. Which holds sixty-four grains?
the seventh squarethe ninth square🔟the tenth square
5
Each square holds double the one before. Which holds two grains?
the second squarethe third squarethe eighth square
6
🔷Does three, six, twelve, twenty-four double each time?
YesNo
7
Which row does not double each time?
🔷three, six, twelve, twenty-four🟨ten, twenty, thirty, forty🟣four, eight, sixteen, thirty-two
8
Each square holds double the one before. Which holds sixteen grains?
the first squarethe fifth squarethe ninth square
9
Which row does not double each time?
🟠five, ten, twenty, forty🟣four, eight, sixteen, thirty-two🟩two, four, six, eight
10
🟦Does one, two, three, four double each time?
YesNo
11
Which row does not double each time?
🔷three, six, twelve, twenty-four🟫one, three, five, seven🟠five, ten, twenty, forty
12
Each square holds double the one before. Does the eighth square hold thirty-two grains?
YesNo
Scan the code at the top to mark this sheet on screenTake a photo of your answers or type them. It is marked for you automatically, and your score is kept.
Answer key · Set C
The rice on the chessboard
1the fourth square
2the ninth square
3four, eight, sixteen, thirty-two
4the seventh square
5the second square
6Yes
7ten, twenty, thirty, forty
8the fifth square
9two, four, six, eight
10No
11one, three, five, seven
12No
Mark each answer, count the right ones and write the score on the sheet.