سؤال 41

Which calculation does NOT give the same result as 2.8 + 0.35?

2.80 + 0.35 = 3.15
2.8 + 0.3 + 0.05 = 3.15
3 + 0.15 = 3.15
2.8 + 0.35 = 2.43پاسخ درست

توضیح

Aligning places gives 2.80 + 0.35 = 3.15, which also equals 2.8 + 0.3 + 0.05 and 3 + 0.15. The calculation 2.8 + 0.35 = 2.43 right-aligns 8 and 5 as though both were hundredths, so it does not preserve place value.

توضیح

ادامهٔ این آزمون