Câu số 1: Think of a number that when added to 12 then the answer is divided by 5 the result is 7. The number is…………. A – 12 B – 47 C – 35 D – 23 Câu số 2: If a square has one side’s length is 12cm then its perimeter is …….cm Câu số 3: The sum of all 3-digit numbers that are greater than 156 is…… Câu số 4: If a = 5 then a + 12 + 15 = ….. Câu số 5: The perimeter of a rectangle is 112cm and its length is 8cm more than its width. Its width is……………cm A – 48 B – 24 C – 32 D – 64 Câu số 6: When N is divided by 12, the remainder is 9. When N is divided by 6, the remainder is………… A – 2 B – 0 C – 3 D – 4 Câu 10: If (y + 1) + (y + 2) + (y + 3) = 12 then y = ………. 5 sao ạ chỉ cần đáp án ạ ko cần giải thích rõ ràng