Question

直接写上得数　 23×30= 2-56= 38×4= 2÷25= 0.28÷0.7= 8.3-6= 0÷48.3= 57-314= 34

直接写上得数　 23×30= 2- 5 6 = 3 8 ×4= 2÷ 2 5 = 0.28÷0.7= 8.3-6= 0÷48.3= 5 7 - 3 14 = 3 4 ： 8 9 = 160×25%= 32.4÷31.8≈ 482+313≈ 296×62≈ 51.2-38.6≈

Answer 1

23×30=690
2-
5
6
=1
1
6
3
8
×4=
3
2
2÷
2
5
=5
0.28÷0.7=0.4
8.3-6=2.3
0÷48.3=0
5
7
-
3
14
=
1
2
3
4
：
8
9
=
27
32
160×25%=40
32.4÷31.8≈1
482+313≈800
296×62≈18000
51.2-38.6≈10．