影片學習單--次數與加權平均數

影片學習單--次數與加權平均數

7th Grade

7 Qs

quiz-placeholder

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影片學習單--次數與加權平均數

影片學習單--次數與加權平均數

Assessment

Quiz

Mathematics

7th Grade

Easy

Created by

yu TSENG

Used 3+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

12×7+13×9+14×12+15×9+16×8+17×512\times7+13\times9+14\times12+15\times9+16\times8+17\times5

12×7+13×9+14×12+15×9+16×8+17×56\frac{12\times7+13\times9+14\times12+15\times9+16\times8+17\times5}{6}

12×7+13×9+14×12+15×9+16×8+17×550\frac{12\times7+13\times9+14\times12+15\times9+16\times8+17\times5}{50}

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

要把 160x<170160\le x<170  這組內的12個數都看成多少?

160

164

165

170

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 180x<190180\le x<190  這組數據中,其組中點是多少?


180

185

190

195

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖表,A=?

50×450\times4

55×455\times4

60×460\times4

65×465\times4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖表,B=?

 360360 

 370370 

 380380 

 390390 

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖表,C=?

 700700 

 730730 

 750750 

 780780 

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖表,一甲的數學平均分數

 50×4+60×6+70×10+80×8+90×25\frac{50\times4+60\times6+70\times10+80\times8+90\times2}{5} 

 50×4+60×6+70×10+80×8+90×230\frac{50\times4+60\times6+70\times10+80\times8+90\times2}{30} 

 55×4+65×6+75×10+85×8+95×230\frac{55\times4+65\times6+75\times10+85\times8+95\times2}{30} 

 60×4+70×6+80×10+90×8+100×230\frac{60\times4+70\times6+80\times10+90\times8+100\times2}{30}