'; WriteToReading('Click on the button to see the reading.'); WriteToTimer(Stuff); } } function StartReading(){ Stuff='
'; Stuff+='Remaining time:
'; WriteToTimer(Stuff); parent.Reading.location.href='subtractionr.htm'; timeoutID=setTimeout('DownTime(1,0)',1000); } function TimesUp() { if (ShowReadingAgain.length > 0) { Stuff='
'; Stuff+=''; Stuff+=''; Stuff+='
'; WriteToTimer(Stuff); } WriteToReading('Your time is over!'); } function WriteToReading(Stuff){ parent.Reading.document.clear(); parent.Reading.document.open(); parent.Reading.document.writeln (""); parent.Reading.document.writeln (""); parent.Reading.document.writeln ("
"); parent.Reading.document.writeln (Stuff); parent.Reading.document.writeln ("
"); parent.Reading.document.close(); } function WriteToTimer(Stuff){ parent.Timer.document.clear(); parent.Timer.document.open(); parent.Timer.document.writeln (Stuff); parent.Timer.document.close(); } function CheckAnswer(QNum, AnsNum, Correct) { whichfb = (5*(QNum-1) + AnsNum) if (Correct == 1) { if (DoneStatus[QNum] != '1'){ Tries = Tries + 1; DoneStatus[QNum] = '1'; Score = Score + 1;} if (eval(IndicatorName[whichfb]) != null){ eval(IndicatorName[whichfb]).value = rightchar} Feedback = Responses[whichfb] if (Feedback == '') {Feedback = DefaultRight} Percent = Math.floor(Score*100/Tries) + '%'; Feedback = Feedback + '
' + YourScore + ' ' + Percent + '.'; var i = 0; var AllDone = true; for (i=1; i'; } WriteFeedback(Feedback); } else { if (DoneStatus[QNum] != '1'){ Tries = Tries + 1;} if (eval(IndicatorName[whichfb]) != null){ eval(IndicatorName[whichfb]).value = wrongchar} Feedback = Responses[whichfb] if (Feedback == '') {Feedback = DefaultWrong} WriteFeedback(Feedback) } } function WriteFeedback(Feedback) { parent.FeedbackFrame.document.clear(); parent.FeedbackFrame.document.open(); parent.FeedbackFrame.document.writeln(""); parent.FeedbackFrame.document.writeln(""); parent.FeedbackFrame.document.writeln("
"); parent.FeedbackFrame.document.writeln(Feedback); parent.FeedbackFrame.document.writeln("
"); parent.FeedbackFrame.document.close(); }

Mad Subtraction

Click on the correct answer



1 2-2
0
7
3
2 7-4
3
6
2
3 9-5
4
4
4
4 5-1
4
0
10
5 3-2
6
1
9
6 6-4
10
3
2
7 6-5=
11
6
1
8 9-6=
5
3
15
9 5-6=
1
-1
11
10 18-9-6=
3
6847
1896