Unit 6Operations with DecimalsAdd and Subtract Through Thousandths-chapter 12 Multiply Decimals-chapter 13 Divide Decimals-chapter 14 Divide by Two-Digit Divisors-chapter 15 |
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Chapter 12 |
| Number Sense: Add decimals and verify the reasonableness of the results. |
| Number Sense: Estimate, round and manipulate very large and very small numbers |
| Mathematical reasoning: Indicate the relative advantages of exact and approximate solutions to problems and give answers to a specified degree of accuracy |
| Mathematical reasoning: Use estimation to verify the reasonableness of calculated results. |
Chapter 13 |
| Number Sense: Multiply decimals and verify the reasonableness of the results. |
| Number Sense: Estimate, round and manipulate very large and very small numbers |
| Number Sense: Students compute with very large and very small numbers, positive integers, decimals and fractions and understand the relationship between decimals, fractions and percents. They understand the relative magnitude of numbers. |
| Mathematical reasoning: Use a variety of methods, such as words, numbers, symbols, charts, graphs, tables, diagrams, and models to explain mathematical reasoning. |
| Mathematical reasoning: Use estimation to verify the reasonableness of calculated results. |
| Mathematical reasoning: Indicate the relative advantages of exact and approximate solutions to problems and give answers to a specified degree of accuracy. |
Chapter 14 |
| Number Sense: Divide with decimals and verify the reasonableness of the results. |
| Number Sense: Demonstrate proficiency with division, including division with positive decimals and long division with multidigit divisors. |
| Mathematical reasoning: Apply strategies and results from simpler problems to more complex problems. |
Chapter 15 |
| Number Sense: Demonstrate proficiency with division, including division with positive decimals and long division with multidigit divisors. |
| Number Sense: Add, subtract, multiply and divide with decimals and verify the reasonableness of the results. |
| Mathematical reasoning: Apply strategies and results from simpler problems to more complex problems. |
| Mathematical reasoning: Make precise calculations and check the validity of the results from the context of the problem. |
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$ 7.83 + 2.25 |
$ 4.35 + 3.12 |
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$ 12.15 + 14.88 |
$ 3.47 + 2.25 |
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$ 7.76 + 9.68 |
$ 17.25 + 23.49 |
| 3.829 + 1.246 = | 6.745 + 0.982 = |
| 0.487 + 0.512 = | 7.13 + 5.931 = |
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Write the numbers 2-10 so that the sum of each row and diagonal is 18. |
Miguel has one dollar in change. He has twice as many nickels as dimes. He has 14 more pennies than quarters. What coins does he have? |
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Find the missing addends in this addition table:
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In a word game, a = 2 points, b= 4 points, c = 6 points, and so on. How many points is each of the following words worth? quiz math addend |
The Highview scout troop is planing a summer camping trip. The scouts buy their equipment on sale at Kauffman's Kamper World. Use a calculator to help them find the cost.
Item Regular Price Sale Price Tent
Stove
Backpack
Boots
Sleeping Bag
Pad
$249.95
$36.99
$79.50
$67.85
$162.50
$37.95
$224.95
$30.55
$65.25
$52.80
$143.95
2 for $65.00
What two items can be purchased for
about $100.00 at the sale price?
What is the cost of 10 pairs of boots
on sale?
Estimate
the cost of 1 stove, 6 sleeping bags, and 6 pads at the sale price.
A parka regularly sells for $59.99.
Estimate its sale price if marked down similar to the stove.
About how much will the scouts save
on 8 backpacks and 12 pairs of boots?
The scouts paid for a stove and backpack
on sale with five $20 bills. How much was the change?
What is the sale price per pad?
What three items have an average sale
price of about $50.00?
If the sales tax is $0.06 on each dollar,
what is the total cost of one sleeping bag?
What is the total cost of 3 pairs of
boots and 2 tents, including a $0.06 sales tax on each dollar?
| $32, 498 + $17, 120 = n |
| 10 x $28.32 = x |
| $48.50 divided by 2 = a |
| $50 - ( $18.25 = $1.75) = s |
| $195.62 - $147.69 = p |
| $25 = ($37 - $12) = b |
| X | 2 | 0.2 | 0.02 | 0.002 |
| 6 | ||||
| 2 | ||||
| 4 | ||||
| 5 | ||||
| 12 |
| 15.3 x 2.8 ~ n |
| 24.8 x 3.2 ~ p |
| 7.2 x 19.7 ~ m |
| 3.6 x 25.4 ~ b |
| 39.6 x 5.9 ~ z |
| 12.2 x 4.1 ~ x |
| 2.68 x 42.7 = n | Is n = 114.36 or 1,114.36 ? |
| 0.5 x 14.8 = n | Is n = 0.740 or 7.4 ? |
| 0.92 x 4.5 = n | Is n = 4.140 or 41.4 ? |
| 5.3 x 12.07 = n | Is n = 63.971 or 639.71 ? |
| 4.87 x 72.1 = n | Is n = 35.1127 or 351.127 ? |
| 76.2 x 41.4 = n | Is n = 315.468 or 3, 154.68 ? |
| 176.5 x 4.1 = n | Is n = 72.365 or 723.65 ? |
| X | 0.5 | 2.6 |
| 0.9 | ||
| 3.8 | ||
| 14.2 | ||
| 76.5 | ||
| 34.7 | ||
| 15.23 | ||
| 10.06 | ||
| 13.48 | ||
| 12.75 |
| Percent | Decimal | Fraction |
| 25% | ||
| 50% | ||
| 10% | ||
| 5% | ||
| 1% | ||
| 20% | ||
| 53% |
Time
to be challenged!| The product of two numbers is 90. One number is 2.5 times as great as the other. What are the two numbers? |
Ms. Sanchez fills the vending machines at Heights Motel. Every Monday she fills the soft drink machine. She fills the snack machine every third day. She fills the coffee machine every fifth day. She fills all three machines on Monday, August 3. What is the next date on which she will fill all three machines?
Have an old calendar around? |
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These are zoinks: 242; 143; 132; 484; 561; These are not zoinks: 450; 144; 133; 494; 566 What makes a zoink a zoink? What two digit number are all zoinks a multiple of? |
At Bev's birthday party, 10 of her friends wore party hats and 8 of her friends used noisemakers. There were 12 guests. How many of her friends wore a hat and used a noisemaker? |
How about some ?
Practice decimal problems online from aaamath.com
| Decimals, Percentage, and Fractions |
| Practice How Quick You Are |
Time to Exercise the Brain~to
the math sites that we love!
