2021骞村寳浜叕鍕欏摗鑰冭│琛屾脯鏁�(sh霉)閲忛棞绯绘瘡鏃ヤ竴绶达紙28锛�
鐎忚
鏀惰棌
2021骞村寳浜叕鍕欏摗鑰冭│琛屾脯鏁�(sh霉)閲忛棞绯绘瘡鏃ヤ竴绶达紙28锛�
銆愰1銆�5锛�12锛�24锛�36锛�52锛�( )
A.58锛� B.62锛� C.68锛� D.72
銆愰2銆�0锛�1/4锛�1/4锛�3/16锛�1/8锛�( )
A.1/16锛� B.5/64锛� C.1/8锛� D.1/4
銆愰3銆�3锛�5锛�11锛�21锛�( )
A.42锛� B.40锛� C.41锛� D.43
銆愰4銆�6锛�7锛�19锛�33锛�71锛�( )
A.127锛� B.130锛� C.137锛� D.140
銆愰5銆�4锛�12锛�39锛�103锛�( )
A.227锛� B.242锛� C.228锛� D.225
婧Θ鎻愮ず锛�榛炴搳涓嬮爜鏌ョ湅2021骞村寳浜叕鍕欏摗鑰冭│琛屾脯鏁�(sh霉)閲忛棞绯绘瘡鏃ヤ竴绶达紙28锛夌殑绛旀銆�2021骞村寳浜叕鍕欏摗鑰冭│灏囦簬浠婂勾12鏈堜唤鑸夎锛屽皬绶ㄦ帹钖﹀悇浣嶈€冪敓浣跨敤 鍏嶈不闋愮磩鐭俊鎻愰啋鏈嶅嫏锛岄爯绱勬垚鍔熷彲鍦�2021骞村寳浜叕鍕欏摗鍫卞悕鏅傞枔銆佺瓎瑭︽檪闁撶⒑瀹氭檪鏀跺埌鐭俊閫氱煡锛屾彁閱掑ぇ瀹舵彁鍓嶅仛濂芥簴鍌�銆�
1.C銆愯В鏋愩€戦涓悇闋呭垎鍒ユ槸鍏╁€嬬浉閯拌唱鏁�(sh霉)鐨勫拰(2锛�3)(5锛�7)(11锛�13)(17锛�19)(23 锛�29 )(31 锛�37)銆�
2.B銆愯В鏋愩€�
鎬濊矾涓€锛�0×(1/2)锛�1×(1/4)锛�2×(1/8)锛�3×(1/16)锛�4×(1/32)锛�5×(1/64)銆傚叾涓紝0,1,2,3,4,5绛夊樊锛�1/2,1/4,1/8,1/16,1/32 绛夋瘮銆�
鎬濊矾浜岋細0/2锛�1/4锛�2/8锛�3/16锛�4/32锛�5/64锛屽叾涓�锛屽垎瀛愶細0,1,2,3,4,5 绛夊樊锛� 鍒嗘瘝2,4,8,16,32,64 绛夋瘮銆�
3.D銆愯В鏋愩€�5=3×2-1, 11=5×2+1, 21=11×2-1, 43=21×2+1, 鍏朵腑锛�-1,1,-1,1绛夋瘮銆�
4.C銆愯В鏋愩€�
鎬濊矾涓€锛�7=6×2-5, 19=7×2+5, 33=19×2-5, 71=33×2+5, 137=71×2-5,鍏朵腑锛�-5,5,-5,5,-5 绛夋瘮銆�
鎬濊矾浜岋細19(绗笁闋�)=6(绗竴闋�) ×2+7(绗簩闋�)锛� 33=7×2+19, 71=19×2+33, 137=33×2+71銆�
5.C銆愯В鏋愩€�4=1×1+3 12=3×3+3 39=6×6+3 103=10×10+3 228=15×15+3锛屽叾涓�1,3,6,10,15 浜岀礆绛夊樊銆�
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