This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Sawa Safron, twende na maswali haya ya hesabu.
Swali la 21 (b): Nambari inayogawanyika na 3 na 4 ni nambari inayogawanyika na Kigawo Kidogo Zaidi cha Pamoja (LCM) cha 3 na 4.
Step 1: Tafuta LCM ya 3 na 4.
Step 2: Tafuta nambari ndogo zaidi ya tarakimu 3 ambayo ni zao la 12. Nambari ndogo zaidi ya tarakimu 3 ni 100. Gawanya 100 kwa 12: Hii inamaanisha (nambari ya tarakimu 2). Nambari inayofuata ya tarakimu 3 ambayo ni zao la 12 ni: Nambari hii ni ya tarakimu 3 na inagawanyika na 3 na 4.
Jibu:
Swali la 22: Shule ina jumla ya wanafunzi 960. Ikiwa ni wavulana, tunahitaji kujua idadi ya wasichana.
Step 1: Tafuta sehemu ya wasichana. Jumla ya sehemu ni 1.
Step 2: Kokotoa idadi ya wasichana.
Jibu:
Swali la 23: Zungusha 78.456 kwa:
a) Nambari kamili iliyo karibu zaidi
Step 1: Angalia tarakimu ya kwanza baada ya desimali, ambayo ni 4. Kwa kuwa 4 ni chini ya 5, tunazungusha chini (tunaacha nambari kamili kama ilivyo).
Jibu:
b) Sehemu moja ya desimali
Step 1: Angalia tarakimu ya pili baada ya desimali, ambayo ni 5. Kwa kuwa 5 ni 5 au zaidi, tunazungusha juu tarakimu ya kwanza baada ya desimali. Tarakimu ya kwanza baada ya desimali ni 4, kwa hivyo inakuwa 5.
Jibu:
3 done, 2 left today. You're making progress.
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Sawa Safron, twende na maswali haya ya hesabu. Swali la 21 (b): Nambari inayogawanyika na 3 na 4 ni nambari inayogawanyika na Kigawo Kidogo Zaidi cha Pamoja (LCM) cha 3 na 4.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.