Understanding Adjacent Places
Summative Assessment for MAFS.5.NBT.1.1
A
B
6347
In what place is the digit 3 on Card A above?
The hundreds place
What is the value of the digit 3 on Cart A above?
300
63470
In what place is the digit 3 on Card B above?
The thousands place
What is the value of the digit 3 on Cart B above?
3000
Where is the digit 3 on card B located with respect to the digit 3 on Card A? Choose one.
a) One place to the left
b) One place to the right
c) Both are in the same place
How does the value of the digit 3 on Card B compare mathematically to the value of the digit 3 on Card A?
The value of the 3 on Card B is 10 times greater than on Card A because 3000/300 = 10.
C
D
15298
In what place is the digit 8 on Card C above?
The ones (units) place
What is the value of the digit 8 on Card C above?
8
1529.8
In what place is the digit 8 on Card D above?
The tenths place
What is the value of the digit 8 on Card D above?
8/10 or 0.8
Where is the digit 8 on Card D located with respect to the digit 8 on Card C? Choose one.
a) One place to the left
b) One place to the right
c) Both are in the same place
How does the value of the digit 8 on Card D compare mathematically to the value of the digit 8 on Card C?
The value of the 8 on Card C is 1/10th the value of 8 on Card A because 0.8/8 = 0.1 or 1/10.
UNDERSTANDING ADJACENT DIGITS (MAFS.5.NBT.1.1) 2
E
F
83.654
In what place is the digit 5 on Card E above?
The hundredths place
What is the value of the digit 5 on Card E above?
5/100 or 0.05
836.54
In what place is the digit 5 on Card F above?
The tenths place
What is the value of the digit 5 on Card F above?
5/10 or 0.5
Where is the digit 5 on Card F located with respect to the digit 5 on Card E? Choose one.
a) One place to the left
b) One place to the right
c) Both are in the same place
How does the value of the digit 5 on Card F compare mathematically to the value of the digit 5 on Card E?
The value of the 5 on Card F is 10 times greater than on Card E because 0.5/0.05 = 10.
-----------------------------------------------------------------------------------------------------------------------------------------
Summary
If you want to make the value of a digit 10 times greater, where should that digit be written in a new numeral?
The digit should be written one place to the left to make its value 10 times greater.
If you want to make the value of a digit 1/10th its original value, where should that digit be written in a new
numeral? The digit should be written one place to the right to make its value 1/10th its original value.
Based on your work in this lesson, what is true about the value of a digit if its position in a new number is one
place to the right or one place to the left of its original position? Please refer to the problems above to support
your answer.
If a same digit is written one place to the left of its current place, its value will be 10 times greater than its
current value. If a same digit is written one place to the right of its current place, its value will be 1/10th (or 10
times less than) its current value.