## Mental arithmetic training 'Kurepuri' 03 (Intermediate)

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See the description below. This is a mental arithmetic training 'Kurepuri'. Add again only a number of the first digit of the total of added numbers next to each other. Repeat it and answer the last first digit. This is the intermediate problem.

### Calculation of Brain Workout: question 01

Add again only a number of the first digit of the total of added numbers next to each other. Repeat it and answer the last first digit.

### Calculation of Brain Workout: question 02

Add again only a number of the first digit of the total of added numbers next to each other. Repeat it and answer the last first digit.

### Calculation of Brain Workout: question 03

Add again only a number of the first digit of the total of added numbers next to each other. Repeat it and answer the last first digit.

### Calculation of Brain Workout: question 04

### Calculation of Brain Workout : question 05

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