| Category | Format | Size |
|---|---|---|
| Jiangsu Education Edition Second Grade Mathematics Volume 1 | pptx | 6 MB |
"Addition and Subtraction Mixed" Addition and subtraction within 100 PPT courseware 3
Description
"Addition and Subtraction Mixed" Addition and subtraction within 100 PPT courseware 3
1. Calculate the following questions orally and explain how to calculate them.
10+10+10= 50+3+6= 12+ 8+40=
60-20-30= 21- 7-5= 17- 9 + 5=
Column vertical calculation
25＋18+43＝ 61＋36－17＝
37＋28－49＝ 81－43+36＝
Solve the problem
1. Xiaohong has 30 cards, Suni has 18 cards, and Tang Jie has 33 cards. How many cards do they have in total?
2. There are 80 parking spaces in a parking lot. 45 cars and 17 vans have been parked here. How many more cars can be parked?
3. After the K9 bus arrived at the station, 10 male passengers and 3 female passengers got off. How many people got off in total? There are 17 people left in the car. How many people were originally in the car?
4. My father gave me 100 yuan and asked me to go to the store to buy the following three products. enough? If enough, how much is left?
Fill in the blank squares with appropriate numbers so that the sum of the three numbers in each horizontal row, each vertical row and each diagonal row is equal.
10 35 30
45 25 5
20 15 40
30＋25+20＝75
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Update Time: 2024-07-01
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