Question

Perform each of the following calculations, and give an answer with the correct number of decimal places:

a. $45.48cm+8.057cm$

b.$23.45g+104.1g+0.025g$

c.$145.675mL-24.2mL$

d.$1.08L-0.585L$

Short answer

(a) The required answer is,$53.54cm$

(b) The required answer is,$127.6g$

(c) The required answer is, $121.5mL$

(d) The required answer is,$0.50L$

Step-by-step solution

Part (a) Step 1: Given information  

We need to find out the value of $45.48cm+8.057cm$with correct no. of decimal places

Part (a) Step 2: Simplify 

We know that,

The calculation of $45.48cm+8.057cm$is, $53.537cm$

But the lowest of decimal places are two

So, the Answer is rounded off to the hundredths place

Therefore, the required answer is,$53.54cm$

Part (b) Step 1: Given information   

We need to find out the value of $23.45g+104.1g+0.025g$with correct no. of decimal places

Part (b) Step 2: Simplify  

We know that,

The calculation of $23.45g+104.1g+0.025g$is, $127.575g$

But the lowest of decimal places is one

So, the Answer is rounded off to the tenths place

Therefore, the required answer is,$127.6g$

Part (c) Step 1: Given information  

We need to find out the value of $145.675mL-24.2mL$with correct no. of decimal places

Part (c) Step 2: Simplify  

We know that,

The calculation of $145.675mL-24.2mL$is, $121.475mL$

But the lowest of decimal places is one

So, the Answer is rounded off to the tenths place

Therefore, the required answer is,$121.5mL$

Part (d) Step 1: Given information 

We need to find out the value of $1.08L-0.585L$with correct no. of decimal places

Part (d) Step 2: Simplify  

We know that,

The calculation of $1.08L-0.585L$is, $0.495L$

But the lowest of decimal places are two

So, the Answer is rounded off to the hundredths place

Therefore, the required answer is,$0.50L$