![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
Write four formulas with three, six, nine and eighteen numbers, including two multiplication formulas and two addition and subtraction formulas?
yes
Choose three numbers from 17.15.12.7.5.3 to write the addition and subtraction formula or subtraction formula. How many can you write? How to do it?
First grade
15－12=3
5＋7=12
12－5=7
12－7=5
15－3=12
12＋3=15
17－12=5
17－5=12
5＋12=17
·····
Enough!
Choose for yourself!
Use 2 * 3 * 4 * 5 * 6 * 8 to form two subtraction formulas
8—3=5
6—4=2
According to the formula 14.3 + 2.6 = 16.9, write an addition formula and a subtraction formula
2.6+14.3=16.9
16.9-2.6=14.3
16.9-14.3=2.6
RELATED INFORMATIONS
- 1. Write an addition and a subtraction according to 128 + a = 36
- 2. In a subtraction formula, the subtracted is 48, the subtracted is 3 / 5 of the difference, and the subtracted is?
- 3. In a subtraction, the sum of the subtracted, the subtracted and the difference is 256, and the subtracted is 256______ ．
- 4. The sum of the subtracted, the subtracted and the difference in a subtraction formula is 456, and the difference is three times of the subtraction______ ．
- 5. In a subtraction formula, the sum of the subtracted, subtracted and difference is 200, the ratio of difference and subtraction is 3:2, and the difference is () I beg you, big brother, big sister, big aunt, it's not easy to be a primary school student
- 6. In a subtraction formula, the subtracted is 15 / 7, so what is the sum of the subtracted, the subtracted and the difference?
- 7. In a subtraction formula, the subtraction of the subtracted and the difference add up to 258. It is known that the subtraction is twice the difference
- 8. In a subtraction formula, the sum of the subtracted and the difference is 360. The known subtraction is 1 / 4 of the difference, and the subtraction is ()
- 9. In a subtraction formula, the sum of the subtraction sum and difference of the subtracted is 580. It is known that the subtraction is 25 and the difference is 580 If there is a formula, don't make an equation~
- 10. In a subtraction formula, the subtraction is three times the difference, and the sum of the subtraction and the difference is 880,
- 11. (- 41) + (+ 56) + (- 21) + (- 13) = (write the formula)
- 12. Is the nth term in the sequence equal to the general term formula of the sequence?
- 13. Use the numbers 1-9 (each number can only be used once) to form a three digit minus three digit formula
- 14. Fill 0 ~ 6 in the following box to make the formula hold [the number can't be repeated] / / X □ = (2) = (2) = (3) / (4) / (4) / (4) / (4) / (4) / (4) / (4) / (4) / (4) / (4) / (4) / (4) /
- 15. In a subtraction, the sum of the subtracted, the subtracted and the difference is 90 and the difference is 18（ The first half of the second year's holiday, how to do? How to explain to the students in this grade? They have not learned the equation
- 16. Add the subtraction, subtraction and difference of a subtraction expression, and the result is 300. What is the subtraction?
- 17. In a subtraction formula, the sum of the difference between the subtracted and the subtracted is 388. If the subtracted is 16 larger than the difference, what is the subtraction? 388／2＝194 （194＋16）／2＝105
- 18. In a subtraction formula, the sum of the subtracted number, the subtracted number and the difference is 388. The subtracted number is 16 larger than the difference
- 19. An eight digit number is divided by 3 to 1, by 4 to 2, and exactly divided by 11. It is known that the first six digits of the eight digit number are 257633, then the last two digits of the eight digit number are 257633______ ．
- 20. The vertical 7, 4, 1, 2, 9, and the horizontal 6, 3, 1, 8, 5 are now equal to 23. Move the three numbers to add 24? The arrangement of numbers is in the shape of a cross, and the number in the middle is 1