分析:如果是算式比較大小,先求出算式的得數(shù),再比較得解;
如果是名數(shù)的比較大小,先把名數(shù)化成統(tǒng)一的單位,再通過計算比較大。
解答:解:(1)64÷4=16,46÷2=23,
因為16<23,所以64÷4<46÷2;
(2)18×4=72,36×2=72,
因為72=72,所以18×4=36×2;
(3)106×5=530, 因為530>500,所以>500;
(4)72×0=0,72+0=72, 因為0<72,所以72×0<72+0;(5)2千克-500克=2000克-500克=1500克, 因為1500克=1500克,所以2千克-500克=1500克;
(6)5噸+500千克=5000千克+500千克=5500千克, 7噸-700千克=7000千克-700千克=6300千克, 因為5500千克<6300千克,所以5噸+500千克<7噸-700千克. 故答案為:<,=,>,<,=,<.點評:此題考查算式和名數(shù)的大小比較,要根據(jù)實際情況,靈活的選用合適的方法解答.
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