Then 4+3=7, and finally 79.
The third grade mathematics volume 66÷2=22 thinking is to count first, then count, and finally count. The third grade mathematics volume 66÷2=33 thinking is to count first, then count, and finally count.
It should be 60 divided by 2, then 6 divided by 2, and finally 2x3=6.
I hope I can help you.
In grade three, when you calculate 15 times 70, what counts first and then what counts? Hello.
When 15 is multiplied by 70, first calculate 15x7= 105.
Calculate105x10 =1050 again.
What is the first calculation for the third grade mathematics 78-63= 15? What is it? You can also calculate what first and then what? Solving this problem is a non-abdication subtraction. Generally, it starts with the unit, then ten digits, or 70-60, then 8-3 and finally 10+5.
Math problems in grade three, such as 32 plus 45, can be calculated first, and then 30+40=70.
Then 2+5=7.
Then 70+7=77
You can also:
First 32+40=72.
Then 72+5=77.
46×5= the third grade of primary school? What is the most important, what is the most important, and finally? Multiply 6 and 5 to get 30.
Multiply it by 40 (because 4 is in the tenth place) to get 200.
Then 30+200=230
The fourth grade of mathematics primary school: 34.3% to 37%, what counts first, then what counts, and finally what counts? First calculate 3 times 37, then 40 times 37, and finally calculate 300 times 37.
Mathematics 42+ 15 in the second grade of primary school is what counts first, and then what counts, which is a bit 2+5=7.
More than ten digits, 4+ 1=5.
Get 57
It is right to calculate a number first, because sometimes you have to carry it.
How much is 48 plus 37 first? What is it? 48 plus 37
First 50+40, then 90-5.
48+37
=(48+2)+(37+3)-(2+3)
=50+40-5
=90-5
=85
Explanation:
1, first get the integer by complement method, 48+2 = 50), 37+3 = 40, and they add up to 2+3 = 5.
2. After getting the estimated answer, subtract the extra 5, which is the final answer.
Add 44 to 37, then 30+40, then 7+4, and finally 70+1= 81.
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