Question

Q4.Estimate the sum to nearest ten
(57+34)
(43+78)​

Answer 1

Answer:

57+34 =91 =90

43+78 =121 =120

Answer 2

Answer:

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Step-by-step explanation:

$57 + 34 \\ \\ 60 + 30 \\ \\ 90$

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$43 + 78 \\ \\ 40 + 80 \\ \\ 120$

$\bold\red{OR}$

$57 + 34 =91 \\ \implies90$

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$43 + 78 =121 \\ \implies120$