Answer: Câu 9: How many 2-digit numbers are there such that the sum of this number and 9 is a 3-digit number?. Answer: There are numbers.[r]
(1)Bài thi số Điền kết thích hợp vào chỗ ( ): 06:27 Fill in the blank with the suitable sign (>; =;<) Câu 1: Fill in the blank with >, < or = : Fill in the blank with the suitable number Câu 2: In the number 795, the digit Câu 3: is in the ones place The number just after 659 is Câu 4: Grade has 352 students and 28 students less than grade How many students are there in the grade 2? Answer: There are students in the grade Câu 5: Find a number such that the sum of it and the smallest 3-digit number is 120 Answer: Câu 6: Lan has a dozen of candies She shares them equally to friends Each friend has candies Câu 7: In a book-shelf, there were 275 books in the upper case and 170 books in the lower case at first 70 books are taken in each case How many books are there now? Answer: There are Câu 8: Find such that books , is a digit Answer: Câu 9: How many 2-digit numbers are there such that the sum of this number and is a 3-digit number? Answer: There are numbers Câu 10: Lily's father is 41 years old In 20 years' time, Lily's father's age will be 29 years more than Lily's age How old is Lily now? Answer: Lily is years old (2)