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

ORDER THE DECIMALS FROM LEAST TO GREATEST.

1) 2.346, 2.4, 2.436, 2.36, 2.43

2) 5.67, 5.6, 5.76, 5.585, 5.7

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

2) 5.585, 5.6, 5.67, 5.7, 5.76

WRITE IN EXPANDED NOTATION:1) 34.0937

2) 708.2054

Answers: 1) 30 + 4 + .09 + .003 + .00072) 700 + 8 + .2 + .005 + .0004

WRITE IN STANDARD FORM:

1) 500 + 4+ .03 + .002 + .00006

2) 40 + 1 + .9 + .008 + .00007

Answers: 1) 504.032062) 41.90807

WRITE IN STANDARD FORM:

1) FIFTY-SEVEN AND FOUR HUNDRED SIXTY-TWO TEN-

THOUSANDTHS

2) SIX THOUSAND TWO HUNDRED THREE HUNDRED-

THOUSANDTHS

Answers: 1) 57.04622) .06203

WRITE IN WORDS: 1) 7.452912) .00603

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

hundred-thousandths2) six hundred three hundred-

thousandths

COMPARE. USE <, > OR =.

1) 5.6324 ____ 5.982) 7.89 ____ .7893) .386 _____ .44) .68 _____ .68000000000

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) $434) $1.40 5) 5.30

TOM BOUGHT A COAT FOR $197.50, A SUIT FOR $265.95 AND A SHIRT FOR $53.75. HOW MUCH DID HE SPEND?

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

THE MINUEND IS 47.9 AND THE SUBTRAHEND IS 32.578. FIND

THE DIFFERENCE.

Answer: 15.322

SUPER DUPER CHALLENGE: THE SUM OF TWO NUMBERS IS 89.478 AND THE DIFFERENCE IS 15.778. FIND

THE TWO NUMBERS.

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!)