Year 7

Number systems: Rounding in different bases

Year 7

Number systems: Rounding in different bases

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Lesson details

Key learning points

  1. In this lesson, we will be looking at rounding in different bases.

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5 Questions

Q1.
Round 343 (base 10) to the nearest 10 (base 10)
Correct answer: 340
345
350
Q2.
What rule do we use when rounding to the nearest ten
If the units digit is 5 or higher round down. If it's lower than 5 round up
Correct answer: If the units digit is 5 or higher round up. If it's lower than 5 round down
If the units digit is higher than 5 round up. If it's lower than 5 round down. If its 5 stay the same.
Q3.
Round 101(base 5) to the nearest 10(base 5)
Correct answer: 100
105
110
Q4.
What rule do we use when rounding to the nearest 10(base 5)
If the units digit is 3 or higher round down. If it's lower than 3 round up
Correct answer: If the units digit is 3 or higher round up. If it's lower than 3 round down
If the units digit is higher than 3 round up. If it's lower than 3 round down. If its 3 stay the same.
Q5.
21(base 5) is bigger than 21(base10). True or false?
Correct answer: false
true