Squares
12 =
1
0.12 =
0.01
What is the √1.44?
a. 14
b. 1.4
c. 12
d. 1.2
√144 =
12
Draw a diagram to prove that √4 is a perfect square?
On board!
112 =
121
0.32 =
The square root of 1.3 lies between:
a. 1.1 and 1.2
b. 1.3 and 1.4
c. 0.9 and 1.0
d. 0.3 and 0.4
a. 1.1 and 1.2
1.12 = 1.21
1.22 = 1.44
√4.0 =
The square root of 14 is between:
a. 7 and 8
b. 2 and 3
c. 4 and 5
d. 3 and 4
d. 3 and 4
√14 is between two perfect squares - 9 and 16. Verifying with a calculator - √14=3.74
0.92 =
0.81
62 =
36
√2.56 =
1.6
√0.04 =
0.2
Can you estimate what the answer to √111 be?
Hint: What two perfect squares is it between?
It's between √100 and √121, so the answer must be between 10 and 11.
Estimate can be around 10.5-10.6.
Confirm with calculator: 10.54
1.52 =
2.25
1.82 =
3.24
√0.09 =
0.3
I am a perfect square that my digits add up to 10. I am also smaller than 400 but bigger than 36. Who am I?
64
√0.04 + √1.21 =
0.2 + 1.1 = 1.3
0.72 =
0.49
192 =
361
What perfect square lies between 160 and 180?
169
√0.64
0.8
√121 + √400 - √64 =
11+20-8 = 23