Question

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£¨1£©70¡Á80=______¡¡¡¡¡¡ 3.7¡Á0.5=______¡¡¡¡ 3.2¡Á100=______¡¡¡¡¡¡8.9-3.8=______
£¨2£©3.8+2.5+6.2=______¡¡¡¡12-6.2-3.8=______¡¡ 1.7+0.43+3.3=______¡¡ 3.4-1.5-0.5=______
£¨3£©+--=______¡¡ 1.4¡Á5=______¡¡¡¡650-470=______¡¡¡¡79+2.1=______¡¡¡¡
£¨4£©3.14¡Á3=______¡¡¡¡ 6.7+3.4=______¡¡ 2.01¡Á0.4=______¡¡ +=______
£¨5£©3.99+5.2=______¡¡ 23+6.68=______¡¡ 7¡Á0.08=______¡¡¡¡0.25¡Á0.4=______
£¨6£©22¡Á0.2=______¡¡ 99.9+1=______¡¡ 0.72¡Â6=______¡¡ 3.9¡Â1.3=______
£¨7£©0.8¡Á0.8=______¡¡ 5.88+3.12=______¡¡ 1.9+2.1=______¡¡ 26¡Â2.6=______¡¡
£¨8£©340¡Â17=______¡¡ 9.3¡Â0.3=______¡¡13¡Á4=______¡¡ 3.6¡Á5=______
£¨9£©1.5¡Á4=______¡¡ 20¡Á16=______¡¡ 28¡Á3=______¡¡ 3.2¡Â4=______
£¨10£©0.28¡Á100=______¡¡ 3200¡Â1000=______¡¡ 0.5¡Á100=______¡¡ 4¡Á0.125=______
£¨11£©340+120=______¡¡¡¡+=______¡¡ 2.5¡Â5=______¡¡ 4.95¡Á10=______¡¡
£¨12£©12--=______¡¡ 1¡Â0.25=______¡¡5¡Á0.13=______¡¡ 12¡Á0.05=______
£¨13£©3.08¡Â0.1=______¡¡ 0.35¡Á6=______¡¡ 25¡Â0.5=______¡¡ 1.5¡Á3=______
£¨14£©4.3-2.7=______¡¡ 8.1¡Â0.9=______¡¡ 12¡Â1.2=______¡¡ 0.48¡Â6=______
£¨15£©2.6¡Â26=______ 0.72¡Á5=______¡¡¡¡ 4.8+3.2=______¡¡ 5.7¡Â0.3=______£®

Answer 1

½â£º£¨1£©70¡Á80=5600 3.7¡Á0.5=1.85 3.2¡Á100=320 8.9-3.8=5.1
£¨2£©3.8+2.5+6.2=12.5 12-6.2-3.8=2 1.7+0.43+3.3=5.43 3.4-1.5-0.5=1.4
£¨3£©+-= 1.4¡Á5=7 650-470=180 79+2.1=81.1
£¨4£©3.14¡Á3=9.42 6.7+3.4=10.1 2.01¡Á0.4=0.804 +=1
£¨5£©3.99+5.2=9.19 23+6.68=29.68 7¡Á0.08=0.56 0.25¡Á0.4=0.1
£¨6£©22¡Á0.2=4.4 99.9+1=100.9 0.72¡Â6=0.12 3.9¡Â1.3=3
£¨7£©0.8¡Á0.8=0.64 5.88+3.12=9 1.9+2.1=4 26¡Â2.6=10
£¨8£©340¡Â17=20 9.3¡Â0.3=31 13¡Á4=52 3.6¡Á5=18
£¨9£©1.5¡Á4=6 20¡Á16=320 28¡Á3=84 3.2¡Â4=0.8
£¨10£©0.28¡Á100=28 3200¡Â1000=3.2 0.5¡Á100=50 4¡Á0.125=0.5
£¨11£©340+120=460 += 2.5¡Â5=0.5 4.95¡Á10=49.5
£¨12£©12--=11 1¡Â0.25=4 5¡Á0.13=0.65 12¡Á0.05=0.6
£¨13£©3.08¡Â0.1=30.8 0.35¡Á6=2.1 25¡Â0.5=50 1.5¡Á3=4.5
£¨14£©4.3-2.7=1.6 8.1¡Â0.9=9 12¡Â1.2=10 0.48¡Â6=0.08
£¨15£©2.6¡Â26=0.1 0.72¡Á5=3.6 4.8+3.2=8 5.7¡Â0.3=19£®
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