2. What is the sum of the products of1250 minus 28 and 5 plus 95?
1. Students take part in tree planting activities. There are 96 students in Grade 4 * * * with 3 trees each, and 87 students in Grade 5 with 4 trees each. How many more trees were planted in the fifth grade than in the fourth grade?
2. The scores of six students in the first group were 86, 79, 98, 100, 89 and 94 respectively. What is their average score?
3. The car travels for 3 hours 135km, and the plane is 28 times faster than the car and flies 60km less. How many kilometers does this plane fly per hour?
A number consists of five tens, three percent and six thousandths. This number is ().
5.4520 square decimeter = () square meters
6. There is a two-digit decimal, which is amplified by 100 times to get 3 12. This decimal is ().
7. If A ÷ B = 9...9 and b represent the smallest two digits, a is ().
8. ∠1= _ _ _ degrees, ∠ 2 = _ _ _ degrees, ∠ 3 = _ _ _ degrees.
9.2.06 km = () km () m
10.5.06kg = () g 4.02m = () cm