Say it Aloud
1.3000
12.3
10 + 2 + 0.3
OR (1 x 10) + (2 x 1) + (3 x 0.1)
OR (1 x 10) + (2 x 1) + (3 x 1/10)
15.27 ____ 15.28
15.27 < 15.28
Liam has a model that shows:
3 ones
4 tenths
2 hundredths
9 thousandths
Write the number he modeled in standard form.
3.459
Plot these four numbers on a number line
7
7.1
7.01
7.001
7, 7.001, 7.01, 7.1
12.34
Twelve and thirty-four hundredths
0.384
0.3 + 0.08 + 0.004 OR
(3 x 0.1) + (8 x 0.01) + (4 x 0.001)
OR (3 x 1/10) + (8 x 1/100) + (4 x 1/1000)
15.100 ____ 15.1
15.100 = 15.1
Sofia measured the length of a leaf as 0.082 meters, but her partner wrote it as “eight hundred twenty thousandths.”
Are these values equal? Why or why not?
They are not, the partner's number would be 0.820 which is not equal to 0.082.
Slide 9
C
0.348
Three hundred forty-eight thousandths
10.001
10 + 0.001
OR (1 x 10) + (1 x 0.001)
OR (1 x 10) + (1 x 1/1000)
Rank these numbers from least to greatest:
A) 51.019
B) 51
C) 51.19
D) 51.009
B) 51
D) 51.009
A) 51.019
C) 51.19
Two students recorded how far a toy car rolled:
Mateo’s car: 2.503 meters
Jade’s car: 2.53 meters
Who had the farther distance? Explain how you know.
Jade
2.53 > 2.503
Slide 13
C
78.032
Seventy-eight and 32 thousandths
212.047
200 + 10 + 2 + 0.04 + 0.007
OR
(2 x 100) + (1 x 10) + (2 x 1) + (4 x 0.01) + (7 x 0.001)
OR
(2 x 100) + (1 x 10) + (2 x 1) + (4 x 1/100) + (7 x 1/1000)
Slide 10 - Kaylee and Isabella
D
Four students used a stopwatch to see how fast they could run around the perimeter of the playground. Here were their times:
Tomas - 32.27 seconds
Beth - 33 seconds
Diane - 32.1 seconds
Vicky - 32.09 seconds
Which student had the fastest time?
Vicky
What is the closest whole number to 17.48?
17
123.456
One hundred twenty-three and four hundred fifty-six thousandths
45.643
40 + 5 + 0.6 + 0.04 + 0.003
OR
(4 x 10) + (5 x 1) + (6 x 0.1) + (4 x 0.01) + (3 x 0.001)
OR
(4 x 10) + (5 x 1) + (6 x 1/10) + (4 x 1/100) + (3 x 1/1000)
Rank these numbers from greatest to least:
A) 13.103
B) 13.1
C) 13.003
D) 13.013
A) 13.103
B) 13.1
D) 13.013
C) 13.003
A student wrote that 0.9 < 0.89 because “89 is bigger than 9.”
Explain the error using place-value understanding and give the correct comparison.
They did not start the comparison at the left-most digit (the tenths).
0.9 > 0.89
Answer on the number line