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56+37= 77-38= 46+28= 39+25= 84-53= 63-17= 85-48=
72÷9= 48÷6= 7×3+7= 32÷4= 56÷8= 21÷3= 28÷7=
6×5+6= 21÷7+27= 4×9÷6= 48÷6×5= 1600-800= 500+700= 470+490=
1300克+900克=
2
2
千克
200
200
克.
71-17=
54
54
=
6
6
×
9
9

47-19=
28
28
=
4
4
×
7
7
分析:根据加、减、乘、除的计算方法进行计算,1300克+900克先计算,再进行进行单位间的换算.最后两题先求出计算结果,再根据乘法口决解答.
解答:
解:56+37=93 77-38=39 46+28=74 39+25=64 84-53=31 63-17=46 85-48=37
72÷9=8 48÷6=8 7×3+7=28 32÷4=8 56÷8=7 21÷3=7 28÷7=4
6×5+6=36 21÷7+27=30 4×9÷6=6 48÷6×5=40 1600-800=800 500+700=1200 470+490=960
1300克+900克=2千克200克.
71-17=54=6×9
47-19=28=4×7.
故答案为:2,200,54,6,9,28,4,7.
点评:本题综合考查了学生的计算能力.
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