Decimal Addition & Subtraction

Bonbon buys a pencil & a sharpner. A pencil costs $0.2 & a sharpner costs $0.4. What is the total amount paid?

• $0.6

• $2.4

• $0.24

• $0.8

Answer explanation

Cost of a pencil = $0.2

Cost of a sharpner = $0.4

Therefore, Total cost =

$ 0. 2

$ 0. 4

-----------

$ 0. 6

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Addition

Tags

CCSS.3.NBT.A.2

Murphy buys a kilo of tomato for $1.5 & a kilo of potato for $0.4. What is the total amount paid?

• $1.54

• $5.5

• $1.9

• $6

Answer explanation

Tomato costs $1.5

Potato costs $0.4

Total cost =

$ 1 . 5

$ 0 . 4

------------

$ 1 . 9

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Addition

Tags

CCSS.3.NBT.A.2

CCSS.3.MD.A.2

Moti bought a packet of biscuit for $2.5 & a packet of cookies for $1.5. What was the total amount paid?

• $3.5

• $4

• $5

• $6

Answer explanation

Biscuit packet costs $2.5

Cookies packet costs $1.5

Total Cost

$ 2 . 5

$ 1 . 5

----------

$ 4 . 0

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Addition

Tags

CCSS.3.NBT.A.2

Ram has $5 with him. He spends $2.5. How much is he left with?

• $5

• $3

• $1.5

• $2.5

Answer explanation

Ram has $5. As he spends $2.5, the amount he is left with is the difference of $5 & $2.5

Hence, amount left =

$ 5 . 0

$ 2 . 5

----------

$ 2 . 5

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Subtraction

Tags

CCSS.3.NBT.A.2

Sita has $ 10. She spends $2.75. How much money is she left with?

• $7.25

• $7.75

• $8.25

• $7.75

Answer explanation

Total amount = $ 10

Amount spent = $ 2.75

Amount left = $10 - $ 2.75

$ 1 0 . 0 0

$ 0 2 . 7 5

---------------

$ 0 7 . 2 5

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Subtraction

Tags

CCSS.2.MD.C.8

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

Abraham spends $7. 55 out of his pocket money of $10. How much did he save?

• $3.45

• $2.45

• $3.55

• $2.55

Answer explanation

Total pocket money = $ 10

Amount spent = $ 7.55

Amount saved = $ 10 - $ 7.55

$ 1 0 . 0 0

$ 7 . 5 5

--------------

$ 2 . 4 5

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Subtraction

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

Ram & Imran contribute $ 5 each to buy a cricket ball. The ball costs $5.5. How much money, in total, is left with them?

• $0.5

• $3.5

• $4.5

• $5.5

Answer explanation

Total money = $ 5 + $ 5 = $ 10

(as each contributed $5)

Money spent on ball = $ 5 . 5

Money left with them = $ 10 - $ 5.5

$ 1 0 . 0

$ 0 5 . 5

-------------

$ 0 4 . 5

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Subtraction

Tags

CCSS.2.MD.C.8

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

Modi & Biden contribute $10 each to buy a football. The football costs $15.45. How much money is left after the purchase?

• $5.45

• $4.55

• $4.45

• $5.45

Answer explanation

Total amount = $10 + $10 = $20 (as each paid $10)

Cost of football = $15.45

Therefore,

Amount left = $20 - $15.45

$ 2 0 . 0 0

$ 1 5 . 4 5

--------------

$ 0 4 . 5 5

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Subtraction

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

Putin gave a loan of $20 to Donald on sunday. On monday, Putin gave another loan of $15. Donald paid back $25.5 on wednesday & $9.5 on thursday. Has Donald cleared his dues?

• Yes

• No

• Can't be determined.

• Not sure

Answer explanation

Total amount given as loan by Putin = $ 20 + $ 15 = $ 35

Total amount paid back by Donald = $ 25. 5 + $ 9 .5 = $ 35

$ 2 5 . 5

$ 0 9 . 5

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$ 3 5 . 0

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Addition

Hence, all dues are cleared.

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

On investment of $ 1 every month, a bank gives a bonus of $0.10 (every month). If you invest for 6 months, what will be the total amount you have in the bank?

• $6

• $12

• $6.06

• $6.6

Answer explanation

Total investment (for 6 months)

= $1 + $1 + $1 + $1 + $1 + $1

= $6

Total bonus (for 6 months)

= $0.1 +$0.1 +$0.1 +$0.1 +$0.1 +$0.1

= $0.6

Hence, total amount =

$ 6 . 0

$ 0 . 6

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$ 6 . 6

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Addition

Tags

CCSS.5.NBT.B.7