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1.03 Checking reasonableness

Interactive practice questions

Which of the following is closest to the sum $23+42+34$23+42+34?

$10$10

A

$100$100

B

$1000$1000

C
Easy
< 1min

Which of the following is closest to the sum $97+98+89$97+98+89?

Easy
< 1min

Which of the following is closest to $99+98-87$99+9887?

Easy
< 1min

Is the following sum close to $1000$1000?

$948+827+18$948+827+18

Easy
< 1min
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