สนุกคิดทศนิยม

สนุกคิดทศนิยม

7th Grade

10 Qs

quiz-placeholder

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สนุกคิดทศนิยม

สนุกคิดทศนิยม

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Medium

Created by

วนัสนันท์ อโนวัลย์

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

รูปกระจายของจำนวนใดไม่ถูกต้อง

 3.23=3+(2×110)+(3×1102)3.23=3+\left(2\times\frac{1}{10}\right)+\left(3\times\frac{1}{10^2}\right)  

 6.005=(6×1)+(5×1102)6.005=\left(6\times1\right)+\left(5\times\frac{1}{10^2}\right)  

 14.3=(1×10)+(4×1)+(3×110)14.3=\left(1\times10\right)+\left(4\times1\right)+\left(3\times\frac{1}{10}\right)  

 0.25=(2×110)+(5×1102)0.25=\left(2\times\frac{1}{10}\right)+\left(5\times\frac{1}{10^2}\right)  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

ถ้า a×1102a\times\frac{1}{10^2}  น้อยกว่า  5×11025\times\frac{1}{10^2}  อยู่ 0.04 แล้ว a คือจำนวนใด

0.01

0.10

0.04

1.00

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

ข้อใดต่อไปนี้เป็นเท็จ

1.59<1.5991.59<1.599

3.275>2.275-3.275>-2.275

5.8=5.8005.8=5.800

4.555...=4.54.555...=4.5^{\cdot}

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จำนวนในข้อใดเรียงลำดับจากมากไปน้อย

0.0002 , 0.002 , 0.02-0.0002\ ,\ -0.002\ ,\ -0.02

3.456 , 3.456 , 5.456-3.456\ ,\ 3.456\ ,\ -5.456

7.0005 , 8.005 , 9.057.0005\ ,\ 8.005\ ,\ 9.05

4.5 , 3.5 , 2.5-4.5\ ,\ -3.5\ ,\ -2.5

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

ข้อใดต่อไปนี้เป็นจริง

3.5678+(2.0089)=0.55893.5678+\left(-2.0089\right)=0.5589

(7.8095)(10.9296)=3.1101\left(-7.8095\right)-\left(-10.9296\right)=3.1101

125.653+250.00056=375.65356125.653+250.00056=375.65356

(412.8512)212.4203= 624.2715\left(-412.8512\right)-212.4203=\ -624.2715

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

ข้อใดต่อไปนี้เป็นเท็จ

0.2×0.0005=0.00010.2\times0.0005=0.0001

(1.205)×(0.03)=0.03615\left(-1.205\right)\times\left(-0.03\right)=0.03615

14.0405÷(0.003)=4013.514.0405\div\left(-0.003\right)=-4013.5

(31.50525)÷(1.05)=30.0005\left(-31.50525\right)\div\left(-1.05\right)=30.0005

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

ผลลัพธ์ของ  3.2[4.12(2.1)]3.2-\left[-4.12-\left(-2.1\right)\right]  เท่ากับข้อใด

 5.225.22  

 3.02-3.02  

 9.429.42  

 1.18-1.18  

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