3cdot 9+11=square 4cdot 8-10=square 16:4+6= 10cdot 3-4=square 28:4+9=square 4cdot 3+7= 6:3+18=square 4cdot 4-12=square 4cdot 6-11=square 30:3+2=square 40:4-8=square 18:2-6= 3cdot 4+13=square 12:4-1=square 4cdot 7-16=square

$3\cdot 9+11=36+11=47$<br />$4\cdot 8-10=32-10=22$<br />$16:4+6=4+6=10$<br />$10\cdot 3-4=30-4=26$<br />$28:4+9=7+9=16$<br />$4\cdot 3+7=12+7=19$<br />$6:3+18=2+18=20$<br />$4\cdot 4-12=16-12=4$<br />$4\cdot 6-11=24-11=13$<br />$30:3+2=10+2=12$<br />$40:4-8=10-8=2$<br />$18:2-6=9-6=3$<br />$3\cdot 4+13=12+13=25$<br />$12:4-1=3-1=2$<br />$4\cdot 7-16=28-16=12$