Choose the correct answer. Calculate: 3/4 x 5/4 = ? 8/4 15/16 15/4 8/16 Câu hỏi 2: Calculate: 1/2 - 2/5 + 5/3 = .... 49/30 52/30 53/30 51/30 Câu hỏi 3: Alice's mother is now four times as old as she. Four years ago, her mother was thirty years more than her. How old is Alice now? 12 6 10 8 Câu hỏi 4: Choose the correct answer. Which of the following fractions is greater than 1? 2/3 7/9 11/12 14/8 Câu hỏi 5: Which fraction is equal to 51/34? 17/11 3/4 102/48 9/6 Câu hỏi 6: Fill in the blank: 37 minutes 48 seconds + 29 minutes 36 seconds = .... minutes 24 seconds. 67 66 65 68 Câu hỏi 7: Charlie has eighteen pens more than Bill. Bill has one third as pen as Charlie. How many pens does Bill have? 9 pens 6 pens 3 pens 2 pens Câu hỏi 8: Fill in the blank: 1m2 = ....... cm2. Choose the correct answer. 10000 1000 100 100000 Câu hỏi 9: The sum of two numbers is the greatest - four digit number and their ratio is the smallest - two digit number. Find these numbers. 900 and 99 909 and 9090 989 and 10 999 and 989 Câu hỏi 10: Write 42/63 in lowest term. 4/6 4/9 2/3 6/9
1 Tính Nhanh.
a.303 x 306 +610/305 x 207 + 305
tính giá trị biểu thức : A =1717/1919 * 303/1818 + 1717/1919 * 1515/1818
5 giờ 30 phút bằng :
a.5,5 giờ b.5,3 giờ c.303 phút d.530 phút
(101/303+2022/5055+4004/15015)x2022
Rút gọn phân số 202/303
72 * 202 * 28 phần 303 * 63 * 16
Tính nhanh:72*202*28 phần 303*63*16