אפשר גם אחרת - מדריך למורה כיתה ט חלק א (כתום)- צפיית אורח

________________________________________________________________________________________________ מדריך למורה "אפשר גם אחרת" 12 םותכ א קלח ,ט התיכ 8. פתרו את התרגילים הבאים. 1) 1.2 2 = 1.44 3) 1.5 3 = 3.375 5) 0.3 2 = 0.09 2) 10.5 2 = 110.25 4) 2.8 2 = 7.84 6) 0.1 5 = 0.00001 (1) 1.2 2 = 1.2  1.2 = 1.44 (2) 10.5 2 = 10.5  10.5 = 110.25 (6) 0.1 5 = 0.1  0.1  0.1  0.1  0.1 = 0.00001 9. כתבו כחזקה. 1) 6 ∙ 6 ∙ 6 ∙ 6 ∙ 6 = 6 5 3) 12 ∙ 12 = 12 2 5) (–8) ∙ (–8) ∙ (–8) = (–8) 3 2) 1 ∙ 1 ∙ 1 ∙ 1 ∙ 1 ∙ 1 ∙ 1 = 1 7 4) 6.3 ∙ 6.3 ∙ 6.3 = 6.3 3 6) (–4) ∙ (–4) = (–4) 2 (1) 6 ∙ 6 ∙ 6 ∙ 6 ∙ 6 = 6 5 (4) 6.3 ∙ 6.3 ∙ 6.3 = 6.3 3 (5) (–8) ∙ (–8) ∙ (–8) = (–8) 3 11. כתבו כחזקה. 1) (–1) ∙ (–1) ∙ (–1) ∙ (–1) = 3) 2 3 ∙ 2 3 ∙ 2 3 = ( 2 3 ) 3 5) 20 7 ∙ 20 7 = ( 20 7 ) 2 2) (–2.5) ∙ (–2.5) = (–2.5) 2 4) 1 2 ∙ 1 2 ∙ 1 2 ∙ 1 2 ∙ 1 2 = 6) 9 4 ∙ 9 4 ∙ 9 4 = ( 9 4 ) 3 (2) (–2.5) ∙ (–2.5) = (–2.5) 2 = 2.5 2 (6) 9 4 ∙ 9 4 ∙ 9 4 = ( 9 4 ) 3 עמ' 6 עמ' 6 עמ' 6 (–1) 4 ( 1 2 ) 5