Calculate mentally and write down the answers to the following calculations: a) 0,5 + 0,4 b) 0,01 + 0,3 c)…

Question

Calculate mentally and write down the answers to the following calculations: a) 0,5 + 0,4 b) 0,01 + 0,3 c) 0,9 − 0,3 d) 0,49 + 0,02 e) 0,82 − 0,03 f) 0,1 + 0,003 g) 0,235 − 0,035

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here are the solutions for Exercise 7.6. 1. Calculate mentally and write down the answers to the following calculations: *a) 0,5 + 0,4 Step 1: Add the decimal numbers. 0,5 + 0,4 = 0,9 The answer is: 0,9 ×b) 0,01 + 0,3 Step 1: Align the decimal points and add. 0,01 + 0,30 = 0,31 The answer is: 0,31 ×c) 0,9 − 0,3 Step 1: Subtract the decimal numbers. 0,9 − 0,3 = 0,6 The answer is: 0,6 ×d) 0,49 + 0,02 Step 1: Align the decimal points and add. 0,49 + 0,02 = 0,51 The answer is: 0,51 ×e) 0,82 − 0,03 Step 1: Align the decimal points and subtract. 0,82 − 0,03 = 0,79 The answer is: 0,79 ×f) 0,1 + 0,003 Step 1: Align the decimal points and add. 0,100 + 0,003 = 0,103 The answer is: 0,103 ×g) 0,235 − 0,035 Step 1: Align the decimal points and subtract. 0,235 − 0,035 = 0,200 The answer is: 0,2

Calculate mentally and write down the answers to the following calculations: a) 0,5 + 0,4 b) 0,01 + 0,3 c) 0,9 - 0,3 d) 0,49 + 0,02 e) 0,82 - 0,03 f) 0,1 + 0,003 g) 0,235 - 0,035

Answers

Step-by-step solution

Part a· 1 step

Add the decimal numbers.

Part b· 1 step0,31

Align the decimal points and add.

Part c· 1 step0,6

Subtract the decimal numbers.

Part d· 1 step0,51

Align the decimal points and add.

Part e· 1 step0,79

Align the decimal points and subtract.

Part f· 1 step0,103

Align the decimal points and add.

Part g· 1 step0,2

Align the decimal points and subtract.

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