24÷8= 50×2= 40+100= 38×2≈
+= -= += 1-=
9.9-3.3=
0.6+0.8=
0.57-0.27=
9.8-2.9=
8.1-0.9=
0.86-0.4=
2.6+0.5=
1-0.01=
7.2+3.4=
1.5+0.5=
0.9+0.45=
1-0.42=
2.9+3.1=
0.48+0.24=
5.2+3.5=
3.6+4.2=
1.8+0.9=
6.6+11.4=
3.2+1.6=
0.28+0.2=
0.8-0.08=
4-3.2=
6.5-5.6=
0.61-0.3=
1-0.09=
0.58-0.41=
0.837-0.837=
4.1+4.14=
7.2+2.8=
6.6+1.28=
170+430=
109-49=
300×4=
106-6×8=
602- 498≈
207×7≈
=
1- =
64+28= 0×3= 32×2= 70-36= 750+250=
800-360= 500×3=
45×2= 29+17= 12×6= 480÷6= 7×6+8=
0×40= 91-73= 81÷9= 506×7= 9×9-2=
30×7= 400×9= 800×7= 42+6×5=
600×8= 10×80= 70×9+3= 50×8+2=
4321+500= 13.2-5.2= × = 0.2×1.4=
8÷25%= + = 2.4÷ = ÷ =