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6 x 99 Think: round off 99 to 100 So… 6 x 99 becomes 6 x 100 = 600 Then subtract: 600 – 6 = 594 4 x 79 4 x 80 = 320 – 4 = 316.

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Presentation on theme: "6 x 99 Think: round off 99 to 100 So… 6 x 99 becomes 6 x 100 = 600 Then subtract: 600 – 6 = 594 4 x 79 4 x 80 = 320 – 4 = 316."— Presentation transcript:

1 6 x 99 Think: round off 99 to 100 So… 6 x 99 becomes 6 x 100 = 600 Then subtract: 600 – 6 = 594 4 x 79 4 x 80 = 320 – 4 = 316

2 1)8 x 79 = 2) 8 x 199 = 3) 5 x 599 = 4) 7 x 39 = 5) 3 x 2999 = 6)6 x 59 = 6321 495 1 592 2 995 273 8 997 354 1)5 x 299 = 2)9 x 69 = 3)4 x 499 = 4)8 x 199 = 5)7 x 7 999 = 6)2 x 9 999 =19 998 55 993 1 592 1 996 621

3 1)7 x 29 = 2)6 x 499 = 3) 3 x 899 = 4) 4 x 49 = 5) 2 x 1 999 = 6) 8 x 199 = 1)6 x 59 = 2) 3 x 2 999 = 3) 4 x 79 = 4) 9 x 299 = 5) 8 x 3 999 = 6) 7 x 2 999 = 203 196 3 998 1 592 20 993 31 992 2 691 8 997 316 354 2 994 2 697

Download ppt "6 x 99 Think: round off 99 to 100 So… 6 x 99 becomes 6 x 100 = 600 Then subtract: 600 – 6 = 594 4 x 79 4 x 80 = 320 – 4 = 316."

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