22+ 13-6 = 29 (person)
The bakery made 54 loaves of bread. The first group bought 22 loaves and the second group bought 8 loaves. How much bread is left? (two methods)
The first method: 54-22-8 = 24%.
The second method: 54-22+8 = 24.
3. There were 22 boys and 2 girls1person, of which 16 people participated in the competition. How many people still didn't attend?
22+2 1 = 43 (person)
4. Three groups * * * collected 94 mineral water bottles, the first group collected 34, the second group collected 29, and the third group collected how many? (two methods)
The first method: 94-34-29 = 3 1%.
The second method: 94-34+29 = 3 1+0.
5. There are 4/kloc-0 people on the bus, 3 people on the bus/kloc-0, and 9 people get off. How many people are there in the car now?
4 1+ 13-9 = 45 (pieces)
6. Xiaohong has 28 balloons and Xiao Fang has 24 balloons for kindergarten children 15. How many balloons are left?
How many bags of fruit do you need?
28+24- 15 = 37 (piece)
7. 8 yuan has to pay for four bags of biscuits in the supermarket. How much does he have to pay for eight bags of biscuits?
8 ÷ 4 = 2 yuan.
2× 8 = 16 yuan.
8. The teacher has 8 bags of table tennis, 6 in each bag, and lends them to classmates 15. How much is left?
8× 6- 15 = 33 (piece)
9. There are 9 willows in the green belt. The number of pine trees is three times that of willow trees and the number of willow trees is three times that of poplar trees. How many pine trees are there in the green belt? How many poplars are there?
Pine: 9× 3 = 27 (one tree)
Poplar: 9 ÷ 3 = 3 (a tree)
10, children play games in math class. Every five people are divided into six groups. How many children are there in a group?
5× 6 = 30 people
1 1, Xiaojun and Xiaoli made lanterns, Xiaojun made 2 1, Xiaoli made 18 and gave them to 50 teachers. How much more will they make? (two methods)
The first method: 2 1+ 18 = 39%.
50-39 = 1 1 (piece)
The second method: 50-2 1 = 29 (piece)
29- 18 = 1 1 (piece)
12, two. 1 class girls 15, boys 1 1 more than girls. Question two. How many students are there in Class One?
( 15+ 1 1)+ 15 = 4 1).
13, the story book has 74 pages. Xiaoli read 20 pages in grade one and 23 pages in grade two. How many pages are left? (two methods)
The first method: 20+23 = 43 (pieces)
74-43 = 3 1 (piece)
The second method: 74-20 = 54 pages.
54-23 = 3 1 (page)
14. There used to be 58 sheep in the sheepfold. Six go first, then seven. How many are there now? (two methods)
Method 1: 6+7 = 13 (only)
58- 13 = 45 (piece)
The second method: 58-6 = 52 pages.
52-7 = 45 (page)
15, Xiaodong did 10 math problems in the morning, and did 3 more in the afternoon than in the morning. How many did Xiaodong make?
10+3+ 10 = 23 (road)
16, Xiaohong reads the story book. On the first day, she read 15. The next day, she read six pages less than the first day. How many pages did she read in two days?
15-6+ 15 = 24 (page)
17, Xiaoming is 8 years old and his father is 35 years old. How old was Xiaoming when his father was 50?
50-35 = 15 (years old)
8+ 15 = 23 years old.
18, Xiaodong is 6 years old and his mother is 30 years old. When Xiaodong 12 years old, how old was his mother?
12-6 = 6 years old.
30+6 = 36 years old.
19, my father, mother and brother broke 9 corns, and I broke 6. How many corns did our family break?
9× 3+6 = 33 (for me)
20. The school bought 6 science and technology books and 36 story books. How many times are there story books?
36÷6=6