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Review for Quarter 2 Test 1

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Review for Quarter 2 Test 1

XII. Reading & Writing Decimals

XIII. Rounding Decimals

XIV. Comparing & Ordering Decimals

XV. Adding & Subtracting Decimals w/Checkbooks

XVI. Mental Math with Decimals

Answers: 1) 2.346, 2.36, 2.4, 2.43, 2.436

2) 5.585, 5.6, 5.67, 5.7, 5.76

Answers: 1) 30 + 4 + .09 + .003 + .0007

2) 700 + 8 + .2 + .005 + .0004

Answers: 1) 504.03206

2) 41.90807

Answers: 1) 57.0462

2) .06203

Answers: 1) seven and forty-five thousand two hundred ninety-one hundred-thousandths

2) six hundred three hundred-thousandths

Answers: 1) < 2) > 3) < 4) =

Round to the indicated place-Value.1) 6.32 (tenths)2) 34.1157 (thousandths)3) $42.98 (dOllar)4) $1.397 (cent)5) 5.2987 (Hundredths)

Answers: 1) 6.3 2) 34.116 3) $43

4) $1.40 5) 5.30

Answer: $517.20

Paula had a balance of $4,287.95 in her checkbook. She withdrew $50 from the ATM. Her Paycheck for $672.38 was directly deposited into her checking account. What was her new balance after these two transactions?

Answer: $4,910.33

Multiply or divide mentally.1) 56.28 x100 = 2) 3.6 ÷10 =3) .39 x1000 = 4) 23 ÷ 100 = 5) .123 x100 = 6) 89 ÷ 1000 =

Answers: 1) 5,628 2) .36

3) 390 4) .23

5) 12.3 6) .089

Write the missing number.1) 23.3 ÷ ________ = .0233 2) 5.4 × ______ = 540 3) _________ ÷ 100 = .3424) ________ × 1000 = 740

Answers: 1) 1000 2) 100

3) 34.2 4) .74

Answer: 15.322

Here is a suggestion on how to solve it:

Divide both the sum and the difference by 2. You should have two quotients--44.739 and 7.889. Find the difference of the two quotients (which is 36.85). Then find the sum of the two quotients (which is 52.628). And there are the two numbers! 36.85 and 52.628. Pretty cool, right?

(A question like this is NOT on the test!)