Decimal Jeopardy

Estimating Decimals

100

Estimate:  57.3 + 34.6

Estimate the answer.....

57+35=    92 is the estimated answer!

200

53.6 - 35.8 = ?

Estimate the difference....

54 - 36 =  90 is the estimated answer!

300

What is the order of estimating 3.6 + 5.9?

1.3.6 --- 4

2.5.9 --- 6          3.  4 + 6= 10 is the estimated sum!

400

56.9-24.8=?

Find the estimated difference....  

57 + 25 = 82 is the estimated difference!!

500

35.9 + 65.4 - 21.7 =?

Find the estimated answer and the ACTUAL answer...

Estimated answer: 79

Actual answer: 80.3

Rounding Decimals

100

round to the nearest tenth 78.92

find the answer?

78.90

200

round to the nearest whole number 789.23

790.00

300

round to the nearest hundred 1384.23

1400.00

400

round to the nearest hundredth 63.458

63.460

500

round to the nearest hundred millionth 6.852115691

6.852115690

Adding/Subtracting

100

What is 3.4+6.2?

The sum is

9.6.

200

What is 16.5+32.1?

The sum is

48.6.

300

What is 35.6-31.2?

The difference is

4.4.

400

What is 346.84-341.612?

The difference is

5.228.

500

What is 612.92+72.89-634.98?

The total is

50.83.

Money

100

Gilbert has $18.00 he wants to buy bubble gum for $1.50 a pack.How many packs can Gilbert?

12 packs

200

sally wants to buy the new iphone 11 because she just got her pay cheak of $3000 the iphone is$ 2457 how much money will she have left?

543

300

pentunya wanted a puppy the puppy cost $928.83

all the suplies in all cost $184.93 she had $2500.83 how much money does she have left over?

$1387.07

400

billy bob joe had a party he got the new air pods for $235, also a teddy bear for $25.65,also also a $50.00 bill,ad a new shirt from gucci how much did all his gifts cost in total?

$910.65

500

sabre sockie biggy and naz did a challenge the prize was for who won got 1252$ but they all tied so they had to split the money. how much money will each kid get?

313$

Decimal Patterns

100

3.56,4.66,5.76,6.86,7.96

What is the rule of the pattern

+ 1.10

200

7.43,___,9.69,10.82

What is the rule and the blank

Blank: 8.56

Rule: +1.13

300

9.49,11.57,___,15.73

What is the rule and the blank

Blank: 13.65

Rule: +2.08

400

56.93,94.91,___,170.87

What is the rule and blank

Blank: 132.89

Rule: +37.98

500

99.71,___,230.33,295.64

What is the rule and Blank

Blank: 165.02

Rule: +65.31