Jim Olsen Math and Science Integration - Mental Math Quiz 6 600 0 Find the density of a substance that is 750 grams and 30 cubic cm. (Hint: density is in grams per cubic cm.)1000325Well done!11001250To divide 750 by 30, cancel the zeros and then take 75 ÷ 3. Try again.001450To divide 750 by 30, cancel the zeros and then take 75 ÷ 3. Try again.00122500Divide 750 by 30. Try again.00145To divide 750 by 30, cancel the zeros and then take 75 ÷ 3. Try again.001Find the volume of a block of concrete which is 20 cm tall, 30 cm wide, and 40 cm long. (You may <i>leave off the units</i> from your answer.)1000324000Well done.1100124,000Well done.110001200Answer should have 3 zeros. Try again.00112000Multiply the numbers and add on the zeros. Try again.00114000Multiply the numbers and add on the zeros. Try again.00120000Answer should have 3 zeros. Try again.001You have 600 mL of a solution. 25% is silver nitrate. How many mL of silver nitrate do you have?10003150Correct!110012525% is 1/4. Try again.00130To divide by 4, divide by 2 twice. Try again.001250To find 1/4 divide by 4. Try again.001300To divide by 4, divide by 2 twice. Try again.001Solve: 4x = 841000321Correct.1100122Divide by 4. An easy way to do this is to divide by 2 twice.001336Divide by 4. An easy way to do this is to divide by 2 twice.00142Divide by 4. An easy way to do this is to divide by 2 twice.0018.4Divide by 4. An easy way to do this is to divide by 2 twice.001Solve: 30x = 6,00010003200Correct.110012000Divide 6000 by 30. Try again.001570An easy way to divide is to cancel one zero and then take 600 ÷ 3. Try again.001300An easy way to divide is to cancel one zero and then take 600 ÷ 3. Try again.001180,000Divide 6000 by 30. An easy way to divide is to cancel one zero and then take 600 ÷ 3. Try again.001If the density of a substance is 10 gm/cu. cm and you have 82.3 cu. cm, how much does it weigh? (Find the mass.)10003823Correct.110018.23To multiply by 10 move the decimal place to the right one place (because you are making the number bigger). Try again.00182.3Multiply density times volume to get mass. Try again.00141.15To multiply by 10 move the decimal place to the right one place (because you are making the number bigger). Try again.001810To multiply by 10 move the decimal place to the right one place (because you are making the number bigger). Try again.001Find the volume (in cubic feet) of a slab of concrete which is 3 inches thick, 20 feet wide, and 90 feet long. (You may <i>leave off the units</i> from your answer.) Hint: 3 inches is what fraction of a foot.10003450Well done.110015400Multipy the numbers. Use 1/4 feet for 3 inches. Try again.000900Multipy the numbers. Use 1/4 feet for 3 inches. Try again.001480Take 1/4 of 20 first. Then multiply by 90. Try again.00145Take 1/4 of 20 first. Then multiply by 90. Try again.001You have 56 gm of a piece of metal that is iron and copper. 25% is copper. How many grams of copper do you have?1000314Correct!110015.625% is 1/4. Try again.0011.6To divide by 4, divide by 2 twice. Try again.001112To find 1/4 divide by 4. Try again.00122456 ÷ 2 is 28. Divide by 2 again. Try again.001How far can a family travel if they average 50 miles per hour for three days of driving and drive 8 hours per day? (You may <i>leave off the units</i> from your answer.) 100031200Correct.110011,200Correct.110004000Multiply miles/hour times hours/day times days to get miles. Try again.001400Multiply miles/hour times hours/day times days to get miles. Try again.0011500Multiply miles/hour times hours/day times days to get miles. Try again.001120Multiply miles/hour times hours/day times days to get miles. Try again.001How far can a migratory bird travel if it averages 10 miles per hour for one week and flies 12 hours each day. (You may <i>leave off the units</i> from your answer.) 10003840Correct.11001900Hint: 7 days in a week. Try again.001850Multiply miles/hour times hours/day times days to get miles. Try again.001700Multiply miles/hour times hours/day times days to get miles. Try again.001960Multiply miles/hour times hours/day times days to get miles. Try again.001 Quiz Try to answer the following questions in your head. For this quickie quiz to DO NOT need to include your units. (Generally, in other settings you should include your units on all answers.) Correct! Sorry! Try again. Your answer is partly wrong: Please enter a guess. Next correct letter in the answer: Correct answers: Show answer 1 1 nextpage.htm 0 1 1 0 1 0 2 2 0 0 0 Your score is :-) X Questions answered correctly first time: Questions completed so far: You have completed the exercise. Your time is over! => <= Index 0 0 0 contents.htm Geneva,Arial,sans-serif small #ffccff #5d016d #FFFFFF #000000 #0000FF #0000CC #800080 http://yourserver.com/cgi-bin/FormMail.pl you@yourserver.com Please enter your name: one two three Questions answered correctly first time: Check OK => <= Hint Show all questions Show questions one by one 1 0 0