(2) 10- 10=
(3) 18-8=
(4) 13-3=
(5) 12- 1 1=
(6) 12- 12=
(7)6-3=
(8)6-4=
(9) 1 1-2=
( 10)8-3=
( 1 1) 13-3=
( 12) 1- 1=
( 13) 15-3=
( 14) 10-9=
( 15)3-3=
The first grade math oral problem 15 2 1. Oral mathematics
202= 30003= 40005= 8402=
963= 2 107= 3208= 50005=
Oral answer
There are () tens in (1)60? There are () hundreds in six hundred.
There are () ten and () one in 56.
(3)360 has () hundred and () ten.
(4) There are () thousand in 5000, which can also be regarded as () hundred.
Do oral calculations
18030
Fill in the appropriate numbers in the box below.
120□03
calculate
Subtract an integer from 320 and divide the difference by this integer. The quotient is 7. What is this integer?
Answer:
1. 10, 1000,800,420,32,30,40, 1000
2.( 1)6, 6(2) 5,6 (3)3,6 (4)5,50
3. Analysis: How many 30s does 180 contain? Using the multiplication formula, 368 is six 30s, which is 180, so 18030=6. Solution: 18030=6
4. Analysis: According to the meaning of the question: 120 divided by dozens is greater than 3, 12040 = 3, quotient is greater than 3, and the divisor must be an integer less than 40, that is, 30,20, 10. Solution: 3,2, 1 to be filled in □.
5. Analysis: The answer to this question can be counted backwards. Dividing the difference by the integer decimal quotient is 7, which means that the difference is 7 times the integer decimal quotient. Subtract an integer 10 from 320 to get this difference, indicating that 320 is an integer 10 larger than the difference. So 320 is equivalent to (7+ 1) times this integer. From this, we can find the integer solution: 320(7+ 1)=40 A: the integer is 40.
The oral math problem 15 in grade one is 32+11=16+1=19+0 = 2+18 =1.
13+3= 3+ 15= 3+ 1 1= 1 1+9= 1+ 10=
0+ 1 1= 16+0= 0+ 12= 0+ 19= 1+ 13=
1+ 14= 14+0= 12+8= 2+ 16= 14+0=
2+ 13= 17+0= 10+3= 18+2= 0+ 14=
15+3= 13+6= 10+ 1= 18+ 1= 1 1+2=
0+ 10= 1+ 18= 9+ 1 1= 12+0= 3+ 14=
1+ 17= 15+3= 9+ 1 1= 3+ 17= 1+ 1 1=
13+7= 7+ 13= 1+ 12= 1+ 14= 1 1+9=
12+0= 13+2= 10+0= 3+ 13= 2+ 14=
1+ 18= 16+2= 1 1+2= 3+ 10= 17+2=
10+4= 13+ 1= 8+ 12= 17+3= 0+ 17=
2+ 16= 12+8= 17+0= 19+ 1= 12+7=
14+2= 15+ 1= 0+ 15= 13+ 1= 12+ 1=
1+ 15= 10+ 1= 4+ 10= 0+ 19= 14+2=
15+0= 2+ 1 1= 16+ 1= 19+0= 2+ 18=
12+7= 5+ 1 1= 7+ 13= 8+ 12= 15+4=
16+3= 2+ 15= 1 1+0= 13+3= 5+ 13=
7+ 1 1= 14+3= 0+ 16= 9+ 10= 1 1+ 1=
6+ 14= 7+ 12= 10+2= 12+6= 16+0=
The first grade math oral math problem 15 is 4 1. 16+= 302. + 1 = 243. 18+= 224. 16+= 23.
5.+ 10 = 20 6.24 + = 27 7.8 + 2 1 = 8.27 + 2 =
9. 17 + = 19 10. 1 + 1 1 = 1 1.23 + = 30 12.+ 12 = 23
13. 1 + 29 = 14.7 + 9 = 15.28 + = 30 16.+ 6 = 8
17.+ 2 = 30 18.24 + 4 = 19.+ 16 = 30 20.+ 7 = 30
2 1.28 + 1 = 22.23 + = 28 23.+ 5 = 30 24. 10 + = 13
25.+ 4 = 28 26.6 + 16 = 27.9 + = 18 28. 13 + 10 =
29.5 + 23 = 30.5 + 25 = 3 1.+ 4 = 16 32. 1 1 + 12 =
33. 10 + = 30 34.+ 4 = 30 35.24 + 3 = 36.7 + 13 =
37. 19 + = 25 38.27 + 3 = 39.8 + = 24 40. 14 + = 2 1
4 1.4 + 23 = 42. 13 + = 16 43.+ 18 = 22 44.+ 17 = 19
45.+ 12 = 24 46. 1 1 + 6 = 47.6 + 13 = 48.+ 12 = 29
49.7 + 2 1 = 50.+ 8 = 19 5 1.8 + 6 = 52.+ 1 = 30
The first-year math oral math problem 15 is 58+117 =13+7-8 =11-7+4 =/kloc-.
12-8+4= 4-2+ 18= 8+ 10-7= 15-5+ 1= 6+9-2=
12+3-3= 6- 1+4= 6+8- 12= 3+7-2= 5+ 15- 10=
1 1+7-7= 1 1+7-2= 7-6+6= 5-3+ 16= 16- 1+2=
1 1-4+7= 5+3- 1= 12- 10+ 15= 19- 13+ 1 1= 15- 13+3=
8- 1+9= 19- 13+ 13= 7+ 1 1-3= 8+ 10- 16= 4- 1+ 1=
4-3+ 19= 17+3- 17= 7-4+6= 19- 15+9= 10-6+ 1 1=
7+8- 1 1= 16-9+8= 19-9+3= 7+ 10-4= 15- 1 1+4=
10+6-7= 17- 13+2= 14-6+3= 20- 18+7= 16+4- 10=
20-6+6= 13+7-4= 1+3-3= 2+ 1 1- 10= 17+3- 14=
17- 1 1+ 1= 10-8+7= 19-7+4= 4+ 14- 17= 1 1-9+ 1 1=
6-5+ 17= 1 1+7- 1= 4+ 15-2= 18- 17+ 10= 1 1-4+5=
6-3+ 10= 9+6-2= 19- 16+ 16= 19- 12+ 1= 10-3+ 12=
20- 10+5= 17- 16+ 18= 18- 13+4= 17-4+3= 16-5+ 1=
14+3-3= 9-6+3= 5+3-3= 6+5-4= 14- 12+ 1=
2+ 1 1-4= 17-5+6= 7+8- 13= 3-2+6= 8-7+ 17=
17- 15+6= 19-4+3= 13+3- 15= 8+9- 1 1= 13+6-3=
18- 14+ 1= 12+6-8= 15-7+ 10= 18-7+2= 2- 1+7=
14+5-7= 17-2+ 1= 3+ 17- 10= 1 1+9- 19= 9-5+4=
9+ 10-8= 10-6+2= 1 1+5-9= 18-8+ 10= 1+ 17-8=
The first grade math problem 15 Chapter 610+8 =10+2 =13+2 = 8+2+3 =
8+ 10= 17-7= 19-3= 9+ 1+4=
18-8= 10+8= 3+ 1 1= 7+3+5=
18- 10= 3+ 10= 16-4= 7+4+6=
10+ 1= 10+2= 19-4= 7+8+3=
1+ 10= 10+ 10= 19-5= 6+4+7=
1 1- 1= 14-4= 15-3= 8+2+5=
1 1- 10= 18-8= 10+4= 5+4+6=
6+ 10= 6+ 10= 13-3= 7+2+3=
16-6= 10+9= 14- 1= 3+4+ 10=
16- 10= 8+ 10= 10+2= 1 1- 1-5=
10+3= 13-3= 13-3= 17-7-3=
3+ 10= 5+ 10= 3+ 15= 19-9+ 1=
13-3= 16- 10= 18-8= 15-5-7=
13- 10= 1 1- 10= 5+5= 13-3-4=
10+5= 13- 10= 4+6= 18- 10-4=
5+ 10= 18- 10= 20-20= 17- 10-7=
10+8= 10- 10= 12+4= 14- 10+5=
3+ 10= 10+9= 8-8= 16- 10+3=
1 1- 1= 10-5= 10+0= 20- 10-7=
The first grade math problem1575+8 = 6+7 = 7+9 =14-10 =16-4 =
14+ 1= 9+3= 6+5= 9-9= 1 1+2=
15-2= 8+6= 4+4= 5+8= 9+5=
9+9= 12+3= 12+7= 9+2= 4+7=
19- 10= 14-0= 5+6= 7-3= 18-2=
17-2= 8+7= 8+ 1= 5+7= 9+8=
4+ 12= 5+7= 9+7= 19-8= 8+7=
7+8= 8+5= 15-5= 6+5= 9+6=
3+9= 16-3= 14-4= 15-4= 2+9=
7+6= 6+8= 4+8= 9-3= 6+6=
9-3= 9-7= 17-4= 9+7= 4+8=
7-2= 2+ 1 1= 10+2= 8+4= 9+4=
6+4= 7+8= 8+5= 15-5= 3+4=
16- 10= 18-5= 6-3= 7-5= 8-6=
9+5= 6+7=3+4= 4+5= 8+4= 4+6+9=
The first grade math oral problem 15 8 7+7= 8+5= 6+8= 9+7= 7+8=
6+6= 8+9= 5+8= 9+9= 6+9=
14-7= 12-8= 15-7= 16-9= 1 1-6=
14-9= 17-8= 16-7= 13-5= 14-6=
58+30= 23+8= 63-2= 45+9= 85-4=
76+4= 77-30= 52+9= 56-4= 6+47=
98-6= 89+3= 72-50= 6+67= 8 1-60=
58+4= 99-7= 64+7= 43-40= 82+9=
32-4= 2+78= 47-9= 4 1-5= 50-8=
98-9= 23-6= 57-5= 34-8= 20+68=
70-3= 57-50= 62-8= 70-3= 45-9=
34+6= 52-4= 92-7= 7 1-3= 43+6=
30-6= 40+58= 35+2= 96-4= 35+20=
79+7= 35+7= 67-9= 45-3= 90-6=
32-8= 25+70= 4 1-5= 83-80= 24+3=
The first grade math oral problem15912+6 = 29-7 = 33+2 = 3+40 =15+4 =
23+5= 37+ 1= 29-3= 38-3= 15-4=
18-2= 30+8= 43+ 1= 86+2= 70+3=
30-2= 72-2= 66-4= 39-2= 20-9=
53+5= 35+2= 39-4= 8+50= 20- 1=
40+6= 62+7= 89-5= 63+3= 34-2=
50-4= 1 1+2= 53-3= 60+8= 80-7=
32+4= 26-5= 84+4= 35- 10= 7 1+9=
18-4= 66+ 10= 83-3= 7 1+5= 60-5=
36+3= 58+30= 28-7= 87- 10= 80-6=
55+2= 57-4= 3+54= 10+78= 6 1-4=
5+ 10= 8+30= 50+4= 70+ 1= 60+ 1=
3+30= 1+80= 40+3= 6+20= 2+30=
8+60= 9+80= 6+40= 40+4= 80+8=
20+4= 40+7= 10+6= 2+40= 90+6=
The oral math problem of grade one is 15,1045+30 = 45+3 = 5+41= 50+41= 6+32 =
52+6=40+47=62+4=27+40=5+23=
7 1+5=45+30=69+ 1=6+33= 18+70=
44+3=5+32=25+4=20+35=4+75=
3+95=30+65=53+20=85+3=4+52=
30+65=6+22= 16+3=40+58=56-30=
56-3=89-40=89-4=75-30=56-3=
29-4=77-7=29-20=56-4=63-50=
38-4=98-3=96-30=39-6=
25-4= 78-40=80-30=79-60=
49-7= 26-3= 59-3= 67-3=
99-50= 30- 1= 55-2= 27-5=
45-20= 76-40= 46-30= 46+30=
4+74= 5 1+7= 38+40= 93-80=
63-30= 95-5= 86+ 10= 2+82=
69+0= 73-40= 100-30= 59-4=
The first grade math oral problem15+0175-9 = 92-3 = 42-7 = 71-6 = 58-10 =
47-8=26-7=52-3=69- 10=63-5=
80-2=36-9=78-4=65-8=99-9=
72-2=45-9=86-8=96-2=24-9=
40-2=46-9=43-4= 18-2=38-8=
35+5=85+2=59-4=78+ 10=82-5=
64+6=32+7=49-5=63+3=84-2=
60-4= 1 1+20=45-3=30+8=60-7=
25+4=36-5=84+4=52-3=7 1+9=
88-4=76+0=93-3= 18+5=70-5=
56+20=64+6=65+3= 15-3=30-3=
32+6=29-7=35+2=73+4=25+4=
43+5=87+ 10=39-3=48-30=95-40=
8 1-2=60+8=39+ 10=76+ 10=70+30=
48-9=47-8=52-4=43-8=68-9=
40-2=27-9=32-4=4 1-2=38-9=
30-2=72-2=66-4=39-2=20-9=
53+5=35+2=39-4=8+50=20- 1=
40+6=62+7=89-5=63+3=34-2=
50-4= 1 1+2=53-3=60+8=80-7=
32+4=26-5=84+4=35- 10=7 1+9=
12+6=29-7=33+2=3+40= 15+4=
23+5=37+ 1=29-3=38-3= 15-4=
18-2=30+8=43+ 1=86+2=70+3=
First-year math oral math problems 15 articles1236+30 = 44+30 = 87-20 = 74-40 = 65-10 =
43+50= 7 1+20= 79-50= 95- 10= 75-30=
96-40= 94-30= 3 1+ 10= 34- 10= 66+30=
16- 10= 5 1- 10= 77+ 10= 98-30= 86+ 10=
92-90= 14+40= 8 1-50= 53-40= 73-20=
38+50= 60+ 10= 92-80= 97-80= 2 1+ 10=
25- 10= 28-20= 40-40= 7 1-70= 67-50=
39+60= 12+60= 6 1-30= 44+40= 65-60=
68-20= 47+ 10= 33+30= 32-30= 75+ 10=
82- 10= 79-50= 80-70= 13+60= 2 1+60=
12+60= 93-60= 34+60= 38-20= 67-50=
26+50= 47+ 10= 35+50= 88- 10= 53- 10=
66-20= 20+ 10= 90-70= 98-90= 46-40=
83-60= 1 1+60= 7 1-50= 50-40= 20+40=
76-60= 87- 10= 97- 10= 22+40= 28-20=
72-70= 57-30= 12+ 10= 40+40= 77-50=
80-60= 42+50= 94- 10= 60- 10= 70-50=
23+30= 77-70= 33+30= 98-50= 38+30=
50-40= 47-30= 75-50= 67-40= 28+50=
9 1- 10= 65-40= 78-40= 63+30= 66-20=
73-5= 37+0= 65+3= 16-5= 77+6=
98-4= 76-5= 22-8= 24-2= 86+3=
83+9= 97-2= 44+8= 4 1+8= 86-7=
85-3= 3 1+3= 60+7= 37-0= 17-6=
67-4= 60+7= 12-6= 14+6= 14+5=
5 1-5= 40+9= 13+2= 69-4= 16-2=
36+9= 53-0= 84+4= 40-3= 70-4=
30+8= 6 1-7= 44-6= 26-6= 93+6=
65+4= 87+3= 96-6= 14+4= 80-3=
53+3= 75+7= 33-4= 6 1+5= 32+9=
40-7= 97-9= 62+8= 66-0= 72-3=
5 1- 1= 33+7= 13+3= 89+8= 73-4=
77-5= 74+7= 93-6= 16+2= 22-2=
55+3= 49-5= 68+7= 22+2= 95-4=
1 1+2= 49-2= 59+6= 12+6= 38-4=
57-2= 6 1-7= 47-4= 76+9= 20-6=
19-7= 22-7= 54-2= 16-3= 39-9=
38+ 1= 46+3= 38-3= 58+6= 93+6=
4 1-2= 89- 1= 88+0= 55+5= 98+7=
2 1-8= 99-4= 78-5= 14-4= 79-2=